Which is a case of word play humor?

A、The grammarian is very logical. He has a lot of comma sense.;
B、Back in high school I was really a good student. I mean, in all my five years, I passed almost all of my exams on the first try!;
C、The impeachment hearing of President Trump has been all over the papers. That sounds so serious, when you put these terms together: impeachment, hearing, president, Donald Trump...oh wait, I was wrong.;
D、Mr Bean(Rowan Atkinson)'s wordless antics!