When does an unclear reference occur? A. It occurs when the antecedent of a pronoun is assumed.
B. It occurs when the antecedent of a pronoun is one or more general
ideas or concepts instead of a single noun or simple noun phrase.
C. It occurs when there are two or more nouns in a sentence that a
pronoun could replace.
D. It occurs when the reader is not sure which noun or noun phrase
the pronoun is supposed to replace.