Which of the following statements is true?

Which of the following statements is true?
A、Collocation cannot affect the meaning of words.
B、Unlike conceptual meaning, associative meaning is unstable and indeterminate.
C、Affective meaning indicates the listener^ attitude towards the person or thing in question.
D、Grammatical meaning refers to the part of speech, tenses of verbs and stylistic features of words.
【正确答案】：B