which statement is correct?

Click the Exhibit button.

Based on the output shown in the exhibit, which statement is correct?

A.
R3 is the designated intermediate system.

B.
R3 is the backup designated intermediate system.

C.
R3 has been configured with an export policy and is announcing external routes to IS-IS neighbors.

D.
R3 is using both IPv4 and IPv6 resulting in two pseudonodes.