Question: What is a valid reason for the Mobility Management Entity (MME) to initiate a UE Context Release procedure, releasing the UE-associated logical S1 connection?
Option 1: When a new UE-associated logical S1 connection is established towards a different Public Land Mobile Network (PLMN).
Option 2: During the initial attachment of a UE to the Evolved Packet Core (EPC) network.
Option 3: When the MME detects two active UE-associated logical S1 connections for the same UE after a new connection setup is initiated by the UE.
Option 4: Upon receipt of a UE's periodic tracking area update with no change in the UE's location.
Explanation: The correct answer, Option 3, aligns with one of the specified reasons for initiating a UE Context Release procedure. This scenario ensures network efficiency by releasing redundant connections when a new setup is successfully initiated, preventing duplicate logical connections to the same UE.