Which configuration blocks users on the port from using more than 6 Mbps of traffic and marks the traffic for a class of service of 1?

Refer to the exhibit. You are configuring the S1 switch for the switch port that connects to the client computer. Which configuration blocks users on the port from using more than 6 Mbps of traffic and marks the traffic for a class of service of 1?

A.

B.

C.

D.