Former Secretary of State Hillary Clinton has sent a copy of her book "Hard Choices" to her Republican rivals, reports ABC News.

"Hard Choices" is Clinton's account of the crises she encountered and choices she made during her four years as America's 67^th Secretary of State.

The copies were signed by Clinton herself with a personal message that included:

"From working to restore America's standing in the world to bringing crippling sanctions to Iran to negotiating a ceasefire in Gaza, please enjoy all 596 pages of my time as secretary of state."

She added, "With 15 candidates in the race, you've got enough people for a book club!"

In doing so, she earned some responses from the politicians including Governor Bobby Jindal and Senator Ted Cruz.

Out of all tweets and replies of the Republican candidates, the most recent and most interesting yet is Senator Rand Paul's response.

The Kentucky representative has put the book up for auction on eBay.

In his site, he shows the picture of the book, signed by Hillary Clinton, which now also bears his autograph and a personal message.

As displayed in the photo, he wrote: "Hillary, your refusal to provide security for our mission in Benghazi should forever preclude you from higher office!"

Moreover, in the same site page, a message refers to Clinton's memoir as "a signed copy of a great fiction book", with the word "fiction" in bold font.

The book's specification includes "brand new" condition with "fantasy" as the subject.

Bidding for "Hard Choices" will run for one more day. The highest bid has exceeded $9000 with 73 bids and 22 bidders.

The Republican candidates who received a copy of the book include: Jeb Bush, Ben Carson Sr., New Jersey governor Chris Christie, Senator Ted Cruz, Carly Fiorina, Senator Lindsey Graham, Arkansas governor Mike Huckabee, Louisiana governor Bobby Jindal, Ohio governor John Kasich, George Pataki, Senator Rand Paul, Senator Marco Rubio, Rick Santorum and Donald Trump.

According to the same report, Hillary Clinton sent copies of her books in response to the Republicans' debates and talks on her lack of accomplishments as Secretary of State.

Senator Rand Paul has been serving in the Senate since 2011. According to New York Times, he officially declared himself a candidate for presidential nomination in April.

Paul recently started a campaign called "Cut the Card," which aims to cut the spending of the federal government.

Meanwhile, the campaign site only shows a Rand Paul quote, registration fields and a link for donation.