单选题 Speaker A: Hello, is that Steve? I'm stuck in a traffic jam. I'm afraid I can't make it before seven o'clock.
Speaker B: ______
A. OK, but I still hope you'll try your best to arrive on time.
B. Yes. The traffic is very heavy because it's the rush hour.
C. Why don't you leave home a bit earlier?
D. Never mind. I'll be here waiting for you.