The comma is after a kind of letter like Yes or No a sentence, so the answer would be B. Believe it or not Joe, it is for us to leave.
<span>Correcting mistakes in capitalization and spelling</span>
(1) The planes have to undergo rigorous safety checks. (2) You may have to undergo disappointment and failure before experiencing success. (3) It took me some time to undergo the metamorphosis from teacher to lecturer. (4) Most patients undergo some sort of drug therapy for leukaemia
