单项选择题

W: Look at that boy. He’s in the tree, isn’t he
M: Yes, I think so. How dangerous!
W: We had better tell him to get down.
M: Quite right. But be sure not to frighten him.

What’s the danger()

A.The tree’s falling down.
B.The boy’s falling out of the tree.
C.The woman’s shouting.

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