In a PoE environment, what information does the Network Policy TLV exchange between the PSE and PD?

In a PoE environment, what information does the Network Policy TLV exchange between the PSE and PD?
A . Required Power, VLAN ID, and DSCP Value
B . VLAN ID, IEEE Priority, and DSCP Value
C . IEEE Priority, Required Power, and VLAN ID
D . DSCP Value, Required Power, and IEEE Priority

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Answer: B