Question: What is the primary purpose of the `VarConditionalReconfiguration` UE variable in E-UTRA Radio Resource Control (RRC) protocol?
Option 1: To store the current RRC state for seamless handover between LTE and non-LTE networks.
Option 2: To manage the list of available Public Land Mobile Networks (PLMNs) for cell selection.
Option 3: To buffer downlink data temporarily during a UE's transition to idle mode.
Option 4: To accumulate and store conditional reconfiguration settings, including triggering conditions and target configurations, for potential application upon condition fulfillment.
Explanation: The `VarConditionalReconfiguration` variable is designed to hold accumulated configuration of conditional reconfigurations, including settings and triggering conditions, allowing for efficient dynamic adjustments in the UE's configuration based on predefined conditions.