问题
______ the local authorities put more attention to the safety of the children, more than 20 lives __________ in Gansu Province.
A:Should, would not be claimed
B:Had, would not have been claimed
C:Should, would not be cost
D:Had, would not have been cost
B:Had, would not have been claimed
C:Should, would not be cost
D:Had, would not have been cost
正确答案是：
