What type of port scan is shown below?

Scan directed at open port:

ClientServer
5.2.92:4079 ———FIN———>192.5.2.110:23
5.2.92:4079 <—-NO RESPONSE——192.5.2.110:23

Scan directed at closed port:

ClientServer

5.2.92:4079 ———FIN———>192.5.2.110:23
5.2.92:4079<—–RST/ACK———-192.5.2.110:23

A.
XMAS Scan

B.
Idle Scan

C.
Windows Scan

D.
FIN Scan