Scenario: A Citrix Engineer deployed new iOS applications during an IT maintenance
window. While existing iOS applications remain unaffected, users are reporting they have
NOT received the recently pushed new applications. What is the possible cause of this
issue?

A.
The connection between XenMobile Device Manager and App Controller is down.

B.
The VPP license count has been exceeded.

C.
APNS ports have been blocked.

D.
Enrollment ports have been blocked.