_______ is the author of the book ‘400 Days’?
A) Ravinder SinghB) Chetan BhagatC) Amish TripathiD) Durjoy Datta Explanation: Chetan Bhagat will release his new novel titled ‘400 Days’ on October 08, 2021. He has released the cover for the same. It is the third novel in the Keshav-Saurabh series, after ‘The Girl in Room 105’ and ‘One Arranged Murder’.


