You use static routes for connectivity to the ISP. Your ISP recently switched to using
different links for multicast and unicast traffic. Following the change, users in your company
were unable to receive multicast traffic through the ISP. What must you configure on your
router to reestablish multicast connectivity to your ISP?

A.
Disable PIM on the interface used for unicast traffic.

B.
Add the upstream-interface parameter under the [edit protocols pim] hierarchy.

C.
Add a static default route to the ISP in the inet.2 routing table.

D.
Add the default-rpf-interface parameter under the [edit routing-options multicast]
hierarchy.