Question: Upon receiving an MCPTT (Mission Critical Push To Talk) call release step 2 request, what actions does the IWF (InterWorking Function) floor control server's floor control arbitration logic take regarding resource management and state transition?
Option 1: It only releases media plane resources without altering its state machine status.
Option 2: It enters the 'Idle' state but does not release any reserved media plane resources.
Option 3: It releases all reserved media plane resources (including those for dual floor control operation) and transitions to the 'Start-stop' state.
Option 4: It pauses all running timers without releasing resources or changing its state.
Explanation: This is correct because, upon receiving an MCPTT call release step 2 request, the IWF floor control server's logic must perform two key actions: Resource Release (releasing all reserved media plane resources) and State Transition (entering the 'Start-stop' state after resource release), ensuring a clean termination of the MCPTT call.