<span>A) radioactive decay inside earth.</span>
https://www.sparknotes.com/lit/commonsense/section3/
take a look at this link
"B. Larry's favorite basketball team is the Chicago Bulls." is the only sentence that uses correct capitalization, but it should be noted that the the book title in C could be in italics.
Good vs. Evil, 3 main events, Good always wins. That kind of archetype