An Android device cannot be enrolled with a message similar to: Received an invalid server URL.
What should be checked by the IBM Endpoint Manager administrator to identity the problem?

A.
confirm the Trusted Service Provider is up and running

B.
make sure the provided server name points to the enrollment server

C.
make sure the provided URL points to the Trusted Service Provider URL
D. check if the maximum number of device has been reached for the enrollment server