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