Imagine That, After Processing Human Input, the Browser's HTTP Protocol

Multiple Choice

Imagine that, after processing human input, the browser's HTTP protocol produces
"GET / HTTP/1.1
Host: www.savetrees.org".
Then, according to the _______ , the message means 'Please send me the main page of www.savetrees.org using the HTTP protocol, version 1.1.'

A) semantic rule
B) lexicon rule
C) syntactic rule
D) message rule
E) link rule