Refer to the exhibit.The network administrator normally establishes a telnet session with the switch from host A.However,host A is unavailable.The administrator′s attempt to the switch from host B fails,but pings to the other two hosts are successful.what is the issue?（）

• A、Host B and the switch need to be in the same subnet.
• B、The switch needs and appropriate default gateway assigned.
• C、The switch interface connected to the router is down.
• D、Host B need to be assigned an IP address in vlan 1.
• E、The switch interfaces need the appropriate IP addresses assigned.