There is no rule that says the universe must make sense to human beings. In fact the more we learn about it - subatomic particles, quantum mechanics, the multiverse, etc. the stranger it becomes and the less it appears to operate in ways that are intuitive to our primitive primate brains.
Hell, even space and time might not be fundamental properties, and could themselves be abstractions which emerge from an even deeper underlying reality...
All of which is to say your list should have an extra option:
D. Who The Fuck Knows?
Certain parts of the media/political establishment certainly tried to paint him that way, but really he was only guilty of not being hawkish enough on Russia.
He was always in favor of a ceasefire and a diplomatic solution to the Ukraine conflict instead of perpetuating an endless war.