Which of these commands will enable RPR+ on a Cisco Catalyst 6500 Series Switch with Supervisor Engine 720-3A and Supervisor Engine 720-3B?

A.
6500(config-red)# mode rpr-plus

B.
6500(config)# redundancy mode rpr-plus

C.
6500(config)# supervisor-redundancy rpr-plus

D.
6500(config-red)# redundancy rpr-plus

E.
RPR+ cannot be used in this case

Explanation:
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