问题

In the old days, most teenagers had to work for the landlord (地主) in the field to help _____ their families, because their families couldn’t _____ education for them.—What a pity!
A:support, supply
B:afford, support
C:support, afford
D:afford, give;
B:afford, support
C:support, afford
D:afford, give;
正确答案是: