Refer to the exhibit. 
The IP address space of 128.107.7.0/24 has been allocated for all devices on this network. All
devices must use the same subnet mask and all subnets are usable. Which subnet mask is
required to apply the allocated address space to the configuration that is shown?
A.
255.255.254.0
B.
255.255.255.0
C.
255.255.255.128
D.
255.255.255.192
E.
255.255.255.224
Explanation: