Question: What is the primary purpose of the Nsmsf_SMService_UplinkSMS service operation in the 5G System?
Option 1: To receive downlink SMS messages from the SMSF to the consumer NF.
Option 2: To transmit uplink MMS messages from the consumer NF to the SMSF.
Option 3: To transmit uplink SMS messages from the consumer NF to the SMSF.
Option 4: To manage SMS message storage in the SMSF.
Explanation: The Nsmsf_SMService_UplinkSMS service operation is specifically designed to transmit uplink SMS messages from the consumer NF to the SMSF, as indicated by its description. This operation plays a crucial role in enabling SMS communication in the 5G System.