How many subnets can be gained by subnetting 172.17.32.0/23 into a /27 mask, and how many usable host addresses will there be per subnet?（）

• A、8 subnets, 31 hosts
• B、8 subnets, 32 hosts
• C、16 subnets, 30 hosts
• D、16 subnets, 32 hosts
• E、A Class B address can't be subnetted into the fourth octet.