Refer to the exhibit. As a network administrator， you have configured a dual-rate， dual-bucket policer in accordance with RFC 2698 on the serial interface of you router， connecting to your provider. The SLA with your provider states that you should only send AF31 （limited to 150 kb/s）， AF32 （limited to 50 kb/s）and AF33 （best effort）. Your service provider claims you are not conforming to the SLA.Which two things are wrong with this configuration？ （）

• A、The configuration of a service policy on half-duplex Ethernet interfaces is not supported.
• B、The class class-default sub-command of the policy-map limit command should be set to the DSCP default.
• C、The violate action is wrong.
• D、This policer configuration is not implementing RFC 2698 dual-bucket， dual-rate.
• E、The policer is configured in the wrong class.