单项选择题

[听力原文]9-11
M: Do you see any signs for San Francisco
W: No. According to the map we should be close to the city, but the highway (公路) signs don’t say anything about San Fran cisco.
M: What city names do the signs show
W: I see road signs for San Jose and Los Angeles. Do you think we’re lost
M: Yeah, I think we’re going the wrong direction. I’m going to stop at the next gas station and ask the attendant for direction. I hope we can reach San Francisco before it gets dark.
W: Is San Francisco the capital of California
M: No, it’s Sacramento.
W: Oh. I think I see a gas station up there on the right.
M: Great. I hope we haven’t gone too far out of our way.

What are the man and woman mainly concerned about()

A.They are mainly concerned about that it is getting dark.
B.They are mainly concerned about that they cannot find a gas station.
C.They are mainly concerned about that they may have taken a wrong road.