You just said for yourself why (E) is wrong.
Yes, they focus on different things, we're told.
Yes, calling this "entirely different events" is way too extreme: we have no CLUE if they were entirely different events or not. In fact, there probably is some overlap in events because that would make sense.
As for the others:
(A) is never stated or implied.
(B) is correct.
(C) "of any kind?" Another extreme statement.
(D) "most prominent" isn't stated or implied (again, extreme).