问题详情

A.access-list 10 pennit 172.16.0.0 255.255.0.0
B.access-list 10 permit 172.16.0.0 0.0.0.0
C.access-list 10 pennit 172.16.0.0 0.0.255.255
D.access-list 10 pennit 172.16.0.0 255.255.255.255请帮忙给出正确答案和分析，谢谢！