Which of the Following Statements About Grammar Is NOT Correct

Which of the following statements about grammar is NOT correct?

A) Conjunctions link prepositions and clauses.
B) A pronoun is a substitute word for a noun.
C) Articles precede words used as nouns.
D) Adjectives modify nouns, and adverbs modify verbs.
E) A noun is a person, place, or a thing.
F) A pronoun is a word that can be used in place of a noun.
G) A verb is the action or state-of-being word in a sentence.
H) Adjectives describe some aspect of a verb.