Question: Upon expiry of Timer T1 (End of RTP media) for an MCPTT floor participant who received a Floor Revoke message, what action(s) does the IWF floor control server's floor control arbitration logic take?
Option 1: Continues timer T3 (Stop talking grace) and remains in the current state.
Option 2: Stops timer T3 (Stop talking grace) and enters 'G: Floor Idle' state if the floor is empty.
Option 3: Starts forwarding unrelated RTP media packets and initiates timer T20 (Granted re-send).
Option 4: Immediately revokes floors from all participants and clears all timers.
Explanation: According to the specified behavior for Timer T1 expiry related to an MCPTT floor participant who has been sent a Floor Revoke message, the IWF server stops timer T3 (Stop talking grace). Additionally, if this action results in the floor being empty, the server transitions into the 'G: Floor Idle' state. This ensures orderly management of floor control and resource allocation within the MCPTT system, preventing unnecessary resource utilization when a participant's floor access is revoked.