Which optional PIE do you need to install if you want to use XML for the management and
configuration of Cisco IOS XR Software?

A.
asr9k-mgbl-p.pie-4.2.0

B.
asr9k-doc-p.pie-4.2.0

C.
asr9k-services-p.pie-4.2.0

D.
asr9k-xml-p.pie-4.2.0

E.
do not need a PIE because it is part of the minimum boot image (MBI)