假设路由表有如下4个表项 A.220.117.145.32/22 B.220.117.145.64/22 C.220.117.147.64/22 D.220.117.177.64/22，那么与地址220.117.179.92匹配的表项是___
A.220.117.145.32
B.220.117.145.64
C.220.117.147.64
D.220.117.177.64
正确答案是D