Question: What is the state of the network when it has initiated a de-registration procedure and is waiting for a response from the User Equipment (UE)?
Option 1: 5GMM-REGISTERED
Option 2: 5GMM-DEREGISTERED-INITIATED
Option 3: 5GMM-IDLE
Option 4: 5GMM-CONNECTED
Explanation: The network enters the state 5GMM-DEREGISTERED-INITIATED after it has started a de-registration procedure and is waiting for a response from the UE, indicating that this state is specifically related to the initiation of de-registration and awaiting UE's response.