Question: What is a prerequisite for a User Equipment (UE) to support dynamic HARQ-ACK delay for HD-FDD in coverage enhancement mode A, as part of ce-SchedulingEnhancement-r14?
Option 1: The UE must support LTE TDD mode exclusively.
Option 2: The UE must be capable of operating in frequencies above 6 GHz.
Option 3: The UE must also indicate support for ce-ModeA-r13.
Option 4: The UE needs to have a minimum of four receive antennas.
Explanation: According to the specifications, for a UE to support dynamic HARQ-ACK delay for HD-FDD in coverage enhancement mode A, it is mandatory that the UE also supports ce-ModeA-r13, ensuring compatibility and proper functioning of the enhanced scheduling features within the specified coverage enhancement mode.