Question: Upon receiving an EDT (Early Data Transmission) fallback indication from lower layers in response to a successful RRCConnectionResumeRequest for EDT, connected to EPC, but not due to insufficient UL grant, what action(s) should the UE (User Equipment) take?
Option 1: Initiate transmission of RRCConnectionRequest message and update numRepetitions in previously stored pur-Config.
Option 2: Perform actions as specified for handling EDT fallback in this scenario and initiate transmission of the RRCConnectionResumeRequest message.
Option 3: Start or restart timer T300 and replace the serving cell reference RSRP value with the current serving cell RSRP value.
Option 4: End the procedure as if a PUR fallback indication was received.
Explanation: When an EDT fallback is indicated by lower layers in response to an RRCConnectionResumeRequest for EDT (while connected to EPC) and not due to insufficient UL grant, the UE should perform the necessary actions for handling this specific EDT fallback scenario and then initiate transmission of the RRCConnectionResumeRequest message, ensuring a seamless fallback procedure while attempting to maintain connectivity.