这道题的分析（阅读题）
One day Mr.Black sees a young woman in the street with children.He is very surpised,because all the children are wearing the same clother--with caps,lue coats,and yellow trousers.
"Are all these children yours?"he asks the woman.
"Yes,they are,"she answers.
"Do you always dress them in the same clothes?"asks Mr.Black."Yes,"answers the woman."When we have onlyfour children,we dress them clothes because we don't wangt to lose any of them.It is easy to see our children among other children,because they are all wearing the same clothes.And now,when we have ten.we dress them like thisbecause we don't want to take other children home by mistake.When there are other children among ours,it is easy to see them,because their clothes are different."
( )How many people does Mr.Bliack see in the street one day?
A.ten B.elewen C.four D.ten children