What is a stovepipe malfunction and how is it cleared?

What is a stovepipe malfunction and how is it cleared?

• A. A round fails to chamber after a new round is stripped; perform a tap, rack, assess drill.
• B. A misfire; pull the trigger again.
• C. Two rounds attempt to feed simultaneously; lock the slide to the rear, remove the magazine, rack to clear, reinsert magazine, chamber a round.
• D. A spent shell fails to eject cleanly, sticking in the ejection port; lock the slide to the rear, remove the magazine, rack to clear, reinsert magazine, chamber a round.

Answer: (D)