What statement true about HTTPS?

What statement true about HTTPS?

A.
Web traffic is carried over a separate protocol, unrelated to the original HTTP protocols. This new protocol is HTTPS.

B.
Secure protocols such as tunnel encryption methods are carried over plaintext HTTP.

C.
It is a mechanism for encrypting the HTTP protocol bodies while the keeping the HTTP protocol headers in cleartext.

D.
It uses plaintext HTTP over an encrypting protocol, such as TLS.