The Phrase-Structure Rule S $\rightarrow$ NP VP Summarizes the Fact That
A) Whenever a Sentence

The phrase-structure rule S $\rightarrow$ NP VP summarizes the fact that

A) whenever a sentence is uttered, it must be followed by a noun phrase and a verb phrase.
B) the subject of a sentence must specify both a noun phrase and a verb phrase.
C) a sentence can consist of either a noun phrase or a verb phrase.
D) a sentence consists of a noun phrase followed by a verb phrase.