Question: What is the primary purpose of the Nudm_UECM_SendRoutingInfoForSM service operation in the 5G System (5GS)?
Option 1: To retrieve location information for a UE.
Option 2: To send SMS messages to a UE.
Option 3: To get SMS Routing Info for MO SMS.
Option 4: To get SMS Routing Info for MT SMS.
Explanation: The Nudm_UECM_SendRoutingInfoForSM service operation is specifically used to obtain SMS routing information for Mobile-Terminated (MT) Short Messages. This is evident from the description of the service operation, which clearly states its purpose as getting SMS Routing Info for MT SMS.