Question: What is the primary purpose of the Cell Capability Container Extension TDD LCR Information Element (IE) in UTRAN's Iur interface RNSAP signalling?
Option 1: To indicate the cell's handover capability between different Radio Access Technologies (RATs).
Option 2: To signal the cell's support for specific voice codec configurations.
Option 3: To report the cell's current load and congestion status to neighboring RNS.
Option 4: To convey the cell's capability regarding Multi-Carrier related functions.
Explanation: The Cell Capability Container Extension TDD LCR IE specifically indicates the cell's capability in relation to Multi-Carrier related functions, crucial for efficient radio resource management and planning in UTRAN networks, especially when deploying multi-carrier configurations.