You want to ensure that interface routes appear in multiple routing instances.
Which configuration accomplishes this scenario?

A.
Configure each interface under multiple routing instances.

B.
Add an import policy for each routing instance.

C.
Configure the routing instance to be a forwarding type instead of a virtual-router type.

D.
Configure a RIB group and configure the router to install interface routes in the RIB group.

Explanation:
Refer to for additional information:
https://www.juniper.net/techpubs/en_US/junos/topics/example/ospf-multiple-routing-instances-configuring.html