You are working in a data center environment and are assigned the address range 10.188.31.0/23.You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each.Which IP address range meets these requirements?（）
- A 10.188.31.0/27
- B 10.188.31.0/26
- C 10.188.31.0/29
- D 10.188.31.0/28
- E 10.188.31.0/25