From that we read we can infer that "it was a normal day in the life of theAmerican RedCross in Greater New York" means its staff ______.
A. deal with the fall of houses in the city every day
B．are busy helping people who suffer from disasters every day
C．work during the day and to have banquet in the evening every day
D．go to Harlem, the poorest district of New York, every day and help people there