Study the log below and identify the scan type.

The -sR flag performs an RPC scan that enumerates RPC program numbers on open portmapper/rpcbind ports, producing output with RPC program names rather than raw protocol numbers.

The -sS flag performs a TCP SYN stealth scan targeting only TCP ports, producing a log of TCP port states (open/closed/filtered) rather than IP protocol enumeration.

The -sV flag performs service and version detection on already-identified open ports, producing output with service banners and version strings rather than protocol scan results.

The -sO flag directs nmap to perform an IP protocol scan, which cycles through IP protocol numbers (not TCP/UDP port numbers) to determine which layer-3 protocols the target supports - producing log entries listing protocol IDs rather than port states. The -T flag sets a timing template to control scan speed, and this combination produces the distinctive log pattern shown.