命令ipip-prefixip-prefix-name[indexindex-number]{permit|deny}ipv4-addressmask-length[match-network][greater-equalgreater-equal-value][less-equalless-equal-value]用于配置ip-prefix-。如果一条前缀列表的1ess-equal-已经指定,但是greater-equal4-没有指定,那么该前缀的范围是多少?()
A. [mask-length,less-equal-value]
B. [less-equal-value,32]
C. 没有限制
D. [0,less-equal-value]