When an MQ application running on a distributed platform connects to a local queue manager, which statement is TRUE regarding security checks?
A. The queue manager uses the operating system userid associated with the MQ application.
B. The queue manager authenticates the MQ application using the userid and password as passed in the MQCONN call.
C. The queue manager examines the value of the MCAUSER field.
D. The queue manager examines the value of the SSLPEER field.