Which is the best interpretive thesis statement?

a.
the monster frankenstein killed many people he loved, including his brother, wife, and best friend.

b.
i think that frankenstein’s monster is evil because he commits several murders of innocent people.

c.
because of the murders he committed and his fixation on revenge, frankenstein’s monster represents evil in the novel.

d.
the murders of william, elizabeth, and clerval that frankenstein’s monster commits are acts of revenge.