Which of the following network protocols can be used to access a FortiGate unit as an administrator?

A.
HTTPS, HTTP, SSH, TELNET, PING, SNMP

B.
FTP, HTTPS, NNTP, TCP, WINS

C.
HTTP, NNTP, SMTP, DHCP

D.
Telnet, FTP, RLOGIN, HTTP, HTTPS, DDNS

E.
Telnet, UDP, NNTP, SMTP