You must configure a central SRX device connected to two branch offices with overlapping IP address space.
The branch office connections to the central SRX device must reside in separate routing instances. Which two
components are required? (Choose two.)

A.
virtual routing instance

B.
forwarding instance

C.
static NAT

D.
persistent NAT

Explanation:
http://kb.juniper.net/InfoCenter/index?page=content&id=KB21286