Question: Which fiction author also writes biographies, Jodi Picoult or Kate Grenville?

Context paragraphs:
Perfect Match (novel): Perfect Match (2002) is a novel by Jodi Picoult.  It deals with family issues and crime, primarily child sexual abuse and murder.  It is one of Picoult's only novels not to follow her typical back-and-forth flashback format.

Kate Grenville: Kate Grenville (born 14 October 1950) is an Australian author.  She has published fifteen books, including fiction, non-fiction, biography, books about the writing process.

The Storyteller (Picoult novel): The Storyteller is the twentieth novel written by the author Jodi Picoult.

Between the Lines (book): Co-written alongside her daughter Samantha Van Leer, Between the Lines is Jodi Picoult's first ever young adult book released in 2012.  Picoult has since written a companion/sequel to "Between the Lines", released in 2015, called "Off the Page" which continues the story of main characters bookworm Delilah, her punk-rocker best friend Jules and Delilah's fictional come-to-life prince Oliver.

Second Glance: Second Glance is a fiction novel written by American author Jodi Picoult.

Sofia Vassilieva: Sofia Vladimirovna Vassilieva (born October 22, 1992) (Russian: София Владимировна Васильева ) is an American actress.  Her most notable roles include the children's book heroine Eloise in "Eloise at the Plaza" and "Eloise at Christmastime", Ariel DuBois in the Emmy-winning TV series "Medium", and teenage cancer patient Kate Fitzgerald in the 2009 film adaptation of "My Sister's Keeper" by Jodi Picoult.

My Sister's Keeper (novel): My Sister's Keeper is a 2004 novel written by Jodi Picoult.  It tells the story of 13-year-old Anna, who sues her parents for medical emancipation when she is expected to donate a kidney to her sister Kate, who is dying from leukemia.

Sing You Home: Sing You Home is a novel by American novelist Jodi Picoult.  It was released on March 1, 2011, and tells the story of a lesbian fighting for the right to use frozen embryos created by her and her ex-husband.  The novel features a companion soundtrack CD of ten original songs with lyrics by Jodi Picoult and music by her best friend, Ellen Wilber.  Ellen Wilber also performs the songs on the CD in the voice of the story's main character, Zoe.

Jodi Picoult: Jodi Lynn Picoult ( ; born May 19, 1966) is an American writer.  She was awarded the New England Bookseller Award for fiction in 2003.  Currently approximately 14 million copies of her books are in print worldwide, translated into 34 languages.

Keeping Faith: Keeping Faith (1999) is a novel by bestselling author Jodi Picoult about a custody battle involving a seven-year-old girl who may be seeing God.

Supporting paragraphs: Jodi Picoult Kate Grenville
Answer: Kate Grenville