单项选择题

地址块128.14.32.0/20共有 (29) 个地址,地址范围是 (30)

A.128.14.32.0~128.14.32.255
B.128.14.32.0~128.14.47.0
C.128.14.31.0~128.14.47.255
D.128.14.32.0~128.14.47.255