A small manufacturing company has a Class C network address on the plant floor and needs to create five subnets, each accommodating 25 endpoints. Which subnet mask needs to be configured?
A . 255.255.240.0
B . 255.255.255.128
C . 255.255.255.192
D . 255.255.255.224
E . 255.255.255.240
F . 255.255.255.248
Answer: D