Which feature of the Junos OS installs routes in multiple routing tables?

A.
RIB groups

B.
virtual routers

C.
forwarding table policy

D.
routing table policy

Explanation:
Syntax
rib-groups {
group-name {
import-policy [ policy-names ];
import-rib [ group-names ];
export-rib group-name;
}
}
Hierarchy Level
[edit logical-systems logical-system-name routing-options],
[edit routing-options]

Description
Group one or more routing tables to form a routing table group. A routing protocol can import routes into all the routing tables in the group and can export routes from a single routing table.
Each routing table group must contain one or more routing tables that the JUNOS software uses when importing routes (specified in the import-rib statement) and optionally can contain one routing table group that the JUNOS software uses when exporting routes to the routing protocols (specified in the export-rib statement).

Options
group-nameName of the routing table group. The name must start with a letter and can include letters, numbers, and hyphens.
The remaining statements are explained separately.