Refer to the exhibit.A new subnet with 60 hosts has been added to the network.Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses?（） 
- A、192.168.1.56/27
- B、192.168.1.64/26
- C、192.168.1.64/27
- D、192.168.1.56/26
正确答案:B
答案解析:有
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