Read the following passage and answer if the question is true or false.
Passage: The novels have appeared on The New York Times Best Seller list. A television series adaptation loosely based on the novels debuted on June 8, 2010, on ABC Family. The franchise has been licensed by Amazon.com's Kindle Worlds range of non-canon ebooks.

Question: is pretty little liars based on a book?

Is the answer True or False? Respond with only "True" or "False" and no additional text.
True
True.