M: The taxi driver must have been speeding.

W: Well, not really. He crashed into the tree because he was trying not to hit a box that had fallen off the truck ahead of him.

Question: What do we learn about the taxi driver()

A. He turned suddenly and ran into a tree.

B. He was hit by a fallen box from a truck.

C. He drove too fast and crashed into a truck.

D. He was trying to overtake the truck ahead of him.

对房地产经纪人而言，风险较小，收益相对也较小的代理方式是（）。