Question: In an ad hoc group data communication across a single Mission Critical Data (MCData) system, how is the participants list typically determined for both SDS and FD services?
Option 1: Solely based on criteria predefined in the User Equipment's (UE) configuration.
Option 2: Exclusively by the MCData server using its local policies without external input.
Option 3: Randomly generated by the network for each new ad hoc group communication instance.
Option 4: Using criteria provided by the initiator of the data communication, potentially combined with the MCData server's own criteria or local policies.
Explanation: This is correct because, according to procedures for ad hoc group data communication in an MCData system, the participants list can indeed be determined using criteria provided by the initiator of the data communication. Additionally, the MCData server has the flexibility to incorporate its own criteria or local policies alongside the initiator's input, ensuring a more tailored and secure communication setup.