Question: What is a prerequisite for a User Equipment (UE) to support DL resource reservation with subframe-level granularity in coverage enhancement mode A?
Option 1: Support for NR (New Radio) in standalone mode
Option 2: Capability for LTE (Long Term Evolution) carrier aggregation
Option 3: Indication of support for ce-ModeA-r13
Option 4: Activation of Dual Connectivity (DC) feature
Explanation: For a UE to support DL resource reservation with subframe-level granularity in coverage enhancement mode A, it must indicate support for ce-ModeA-r13, ensuring effective operation in enhanced coverage scenarios while reserving downlink resources at a subframe level.