Refer to the exhibit. Assume Router A is configured for split tunneling. If the Internet Service provider was asked by the customer to provide a guarantee of at least 60 percent of the WAN link between Router A and Router C for encrypted traffic, what would be the best means of identifying this traffic to their QoS Service Policy?（）

• A、permit esp any permit udp any eq 500 any eq 500
• B、permit udp any eq isakmp any eq isakmp
• C、permit ip 10.81.7.0 0.0.0.7 any
• D、tcp any any eq 22