Which sentence contains a pun?(1 point)

A) Would a cardboard belt be a waist of paper?
B) I blinked at the bright light outside.
C) Can we get together on this tomorrow?
D) But that shirt is missing sleeves!

A) Would a cardboard belt be a waist of paper?

The sentence that contains a pun is A) "Would a cardboard belt be a waist of paper?"