Question: What is the potential outcome when a UE (User Equipment) sends a `+CNMPSD` action command in an E-UTRAN connected to a 5GCN, if specific conditions are met?
Option 1: Immediate transmission of a SIGNALLING CONNECTION RELEASE INDICATION message with the cause "UE Requested PS Data session end"
Option 2: Triggering of the Release Assistance Indication for all types of UEs
Option 3: Automatic switching to UTRAN to optimize power consumption
Option 4: Transmission of a UEAssistanceInformation message with powerPrefIndication set to "lowPowerConsumption" to the network
Explanation: In an E-UTRAN connected to a 5GCN, if specific conditions are met, sending a `+CNMPSD` command can lead to the UE transmitting a UEAssistanceInformation message with a preference for low power consumption to the network, aiming to reduce power usage since no application is expected to exchange data.