Question: In Mission Critical Data (MCData) group communication using MBMS bearer, what triggers the undoing of temporary association information between an MCPTT group communication and specific resources on an MBMS bearer?
Option 1: Completion of a single data packet transmission
Option 2: Finish of the group communication over the MBMS bearer
Option 3: Activation of a new MBMS bearer for another group
Option 4: Receipt of a unicast bearer setup request by an MCData client
Explanation: The correct answer is because, in the context of MCData, the temporary association between an MCPTT group communication and specific resources on an MBMS bearer is undone when the group communication over the MBMS bearer is finished, ensuring efficient resource management.