【单项选择题】
Refer to the exhibit. Which Catalyst switch interface command would be used to cause the switch to instruct the phone to override the incoming CoS from the PC before forwarding the packet to the switch？（）<br /> <img src="https://img.ppkao.com/2018-07/tangxueping/2018072610284731031.jpg" /><p> Refer to the exhibit. Which Catalyst switch interface command would be used to cause the switch to instruct the phone to override the incoming CoS from the PC before forwarding the packet to the switch？（）<br /> <img src="https://img.ppkao.com/2018-07/tangxueping/2018072610284731031.jpg" /></p>
A、A.switchport priority extend trust
B、B.switchport priority extend cos 2
C、C.switchport priority extend cos 11
D、D.mls qos cos 2
E、E.mls qos cos 2 override
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