What are the Address Family Identifier (AFI) and Subsequent Address Family Identifier (SAFI) values for VPNv6?

What are the Address Family Identifier (AFI) and Subsequent Address Family Identifier (SAFI)
values for VPNv6?

A.
AFI is 2, SAFI is 96

B.
AFI is 2, SAFI is 64

C.
AFI is 1, SAFI is 64

D.
AFI is 1, SAFI is 128

E.
AFI is 2, SAFI is 128

Explanation: