The security administrator notices a number of TCP connections from the development department to the test network segregation. Large volumes of data are being transmitted between the two networks only on port 22. Which of the following is MOST likely occurring?

A.
The development team is transferring data to test systems using FTP and TFTP.

B.
The development team is transferring data to test systems using SCP and TELNET.

C.
The development team is transferring data to test systems using SFTP and SCP.

D.
The development team is transferring data to test systems using SSL and SFTP.