The Internet is based on which three key technologies?

Question $6$Select one:

A$.$

TCP$/$IP$,$ HTML$,$ and HTTP

B$.$

Email, instant messaging, and newsgroups

C$.$

TCP$/$IP$,$ HTTP$,$ and packet switching

D$.$

Client$/$server computing, packet switching, and HTTP

E$.$

Client$/$server computing, packet switching, and the development of communications standards for linking networks and computers