单选题A class B network 129.35 has 10 subnets. Which of the following options is the correct subnet mask？（）A 255.255.128.0 （11111111.11111111.10000000.00000000）B 255.255.192.0 （11111111.11111111.11000000.00000000）C 255.255.224.0 （11111111.11111111.11100000.0
题目
单选题
A class B network 129.35 has 10 subnets. Which of the following options is the correct subnet mask？（）
A
255.255.128.0 （11111111.11111111.10000000.00000000）
B
255.255.192.0 （11111111.11111111.11000000.00000000）
C
255.255.224.0 （11111111.11111111.11100000.00000000）
D
255.255.240.0 （11111111.11111111.11110000.00000000）