The writer said that most men in the train would help a woman struggling with something heavy. The implication is that______.
A.
it is polite for a man to help a woman in that situation
B.
it is considered a man's duty to offer help to a woman in need
C.
the woman is too weak to carry a heavy suitcase
D.
men are often more interested in other things than in reading newspapers, especially when women are in trouble