Which of the Following Statements Regarding FTP Is True

Which of the following statements regarding FTP is true?

A) In FTP passive mode, the client initializes TCP control and data sessions
B) In FTP active mode, the server uses the PORT command to notify the client of the port through which data is transmitted
C) FTP always uses a TCP session to transmit control and data information
D) FTP always uses TCP port 20 to establish a data session and TCP port 21 to establish a control session
E) FTP always uses TCP port 21 to establish a data session and TCP port 20 to establish a control session