Refer to the exhibit. Which of the following should you do to configure the IP phone to override the priority of the data packets it receives from the host？ （）

• A、 Issue the mls qos trust cos command on the switch port connected to the IP phone.
• B、 Issue the switchport priority extend cos command on the switch port connected to the IP phone.
• C、 Issue the switchport priority extend cos command on the IP phone.
• D、 Issue the mls qos trust cos command on the IP phone.