以下是路由器Router和Switch1的部分配置信息，请解释部分命令的意义。
Router(config)#interface fastEthernet1/0.1
Router(config-subif)#encapsulation isl 11 (1)
Router(config-subif)#ip address 10.1.1.1 255.255.255.0 (2)
Router(config-subif)#exit
Router(config)#interface fastEthernet1/0.2
Router(config-subif)#encapsulation isl 12
Router(config-subif)#ip address 10.1.2.1 255.255.255.0
Router(config-subif)#exit
Router(config)#interface fastEthernet1/0.3
Router(config-subi f)#encapsulation isl 13
Router(config-subif)#ip address 10.1.3.1 255.255.255.0
Router(config-subif)#exit
Router(config)#ip routing (3)
[交换机Switch1的部分配置信息]
Switch1(config)#vlan database (4)
Switch1(vlan)#vlan 11 (5)
Switch1(vlan)#vlan 12
Switch1(vlan)#vlan 13
Switch1(vlan)#exit
Switch1(config)#interface fastEthernet0/0
Switch1(config-if)#switchport mode trunk (6)
Switch1(config-if)#switchport trunk allowed all (7)
Switch1(config-if)#exit
Switch1(config)#interface fastEthernet0/1
Switch1(config-if)#switchport mode trunk
Switch1(config-if)#switchport trunk a110wed a11
Switch1(config-if)#exit
Switch1(config)#interface fastEthernet0/2
Switch1(config-if)#switchport mode trunk
Switch1(config-if)#switchport trunk allowed all
Switch1(config-if)#exit

Man: Excuse me, Madam Is the air-conditioning on This room is getting as hot as a furnace.
Woman: Sorry, sir, a new epidemic called SARS is threatening us right now. As a preventative measure, we are told to let in fresh air by Opening the windows and not using air-conditioners.
Question: What does the woman mean().

A. The temperature is not as high as the man claims.

B. The room will get cool if the man opens the windows.

C. She is following instructions not to use the air-conditioning.

D. She is afraid the new epidemic SARS will soon spread all over town.