Which of the following describes the goal of an Extranet VPRN?

Which of the following describes the goal of an Extranet VPRN?
A . To reduce the number of VPRN tunnels required.
B. To allow routes to be exchanged between all, or selected, sites of one VPRN, and all, or selected, sites of a second VPRN.
C. To simplify the administration of multiple VPRNs.
D. To allow network access between the headquarter sites of each VPRN service and a shared VPRN service offered by a third party.

Answer: B