You have a class C network, and you need to design it for 5 usable subnets with each subnet handling a minimum of 18 hosts each. Which of the following network masks should you use?()
- A225.225.224.0.
- B225.225.240.0.
- C225.225.255.0.
- D255.255.255.224
- E225.225.255.240