Which two statements about the QoS functionality of the Cisco SDM are true？（）

• A、the first step when using the SDM QoS wizard is to select the inbound interface on which the QoS policy must be applied
• B、the SDM QoS wizard can be used to optimize LAN， WAN， and VPN interfaces
• C、he SDM QoS wizard supports network-based application recognition （NBAR） to provide deep and stateful packet inspection
• D、he SDM QoS wizard will apply custom queuing and priority queuing policies to the identified interfaces
• E、he SDM QoS wizard will apply low latency-queuing，custom-queuing and priority-queuing policies to the identified interfaces
• F、to create and manage the QoS settings， the user must select the QoS wizard task under the Monitor option