A Citrix Engineer deployed XenMobile Mail Manager in a Proof of Concept (POC) environment; however, the connection test fails.
What are two possible causes for this connection test failure? (Choose two.)

A.
There are no ActiveSync devices in the environment.

B.
The service account used lacks the correct permissions.

C.
The limit on maximum number of supported ActiveSync devices has been reached.

D.
The environment has unsupported ActiveSync devices.