Question: For a User Equipment (UE) to support the ntn-PUR-TimerDelay-r17 feature for Non-Terrestrial Network (NTN) operations, which of the following must also be supported by the UE?
Option 1: Only ntn-Connectivity-EPC-r17
Option 2: ntn-Connectivity-EPC-r17 and at least one of: pur-CP-EPC-CE-ModeA-r16, pur-UP-EPC-CE-ModeA-r16, pur-CP-EPC-r16, or pur-UP-EPC-r16
Option 3: Any of: pur-CP-EPC-CE-ModeA-r16, pur-UP-EPC-CE-ModeA-r16, pur-CP-EPC-r16, or pur-UP-EPC-r16 without requiring ntn-Connectivity-EPC-r17
Option 4: None of the above; ntn-PUR-TimerDelay-r17 has no dependency on other features
Explanation: To support the ntn-PUR-TimerDelay-r17 feature for delaying the start of the pur-ResponseWindowTimer in NTN operations, a UE must also support ntn-Connectivity-EPC-r17 as a prerequisite. Additionally, the UE has to support at least one of the specified protocol configurations to ensure compatibility with the EPC for NTN connectivity, ensuring seamless integration of NTN operations with existing cellular infrastructure.