question: Which feature in Rel-16 allows transmission of uplink data payload without performing random access procedures? [3GPP Release 16] option 1: UE-group wake-up signals (GWUS) option 2: Mobile-terminated early data transmission (MT-EDT) option 3: Support for Preconfigured uplink resources (PUR) in idle mode option 4: Scheduling of multiple DL/UL transport blocks with single DCI option 5: Presence of NRS on a non-anchor carrier for paging 