Which of the following statements is considered best practice when changing a network policy that has been associated with an interface?
A . The policy should be placed in a "shutdown" state before changes are made.
B . A new network policy should be created and applied to the interface, overwriting the previous policy.
C . The policy must first be removed from the interface, then modified and re-applied to the interface.
D . Before the policy can be changed, it must be deleted with the no network qos <policy-id> command.
E . Before any changes are made to the policy, all network interfaces where the policy is applied have to be shut down.
Answer: B