W: Mrs. Long's briefing seems to go on forever. I was barely able to stay awake. M: How could you sleep through that? It was very important for the mission we were going to carry out., Question: What does the man imply? (A) Mr. Long's briefing was unnecessarily long. (B) The woman should have been more attentive. (C) Mr. Long's briefing was not relevant to the mission.
(B) The woman should have been more attentive.