Which two statements about QoS options in a Cisco UCS environment are true? (Choose two.)

A.
The QoS policy assigns a system class to the outgoing traffic for a vNIC or vHBA.

B.
Flow-control policies determine whether the uplink Ethernet ports in a Cisco UCS environment
send and receive IEEE 802.3x pause frames when the send buffer for a port fills.

C.
If no system class is configured as CoS 0, the Fibre Channel system class is used.

D.
The user can configure QoS for these system classes: platinum, gold, silver, best effort, Fibre
Channel.

E.
When configuring a system class, the type of adapter in a server may limit the maximum MTU
supported.

Explanation: