Cisco IOS XR software is partitioned into three planes: control, data, and management. Which
three of these belong to the data plane? (Choose three.)

A.
XML

B.
RIB

C.
FIB

D.
QoS

E.
PFI

Explanation:
(FIB,QoS,PFI). RIB is part of control plane
.http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.3/security/design/guide/sg33fund.pdf