An engineer is configuring data and voice services to pass through the same port. The designated switch interface fastethernet0/1 must transmit packets using the same priority for data when they are received from the access port of the IP phone. Which configuration must be used?

A. interface fastethernet0/1
switchport voice vlan dot1p
B. interface fastethernet0/1
switchport priority extend cos 7
C. interface fastethernet0/1
switchport voice vlan untagged
D. interface fastethernet0/1
switchport priority extend trust