PLEASE HELP ILL MARK YOU BRAINLIST IF U GET THIS CORRECT

What is the author’s purpose for writing "Marie Curie and the Discovery of Radioactivity"?

A. to entertain the reader with a depiction of Curie's family life

B. to inform the reader about Curie’s discovery of radium

C. to inform the reader about Curie's reasons for buying pitchblende

D. to entertain the reader with stories about scientists working during the late 1800s