Which of the Following Is NOT True Regarding Speech Perception

Which of the following is NOT true regarding speech perception?

A) It is aided by the fact that we encounter a relatively limited number of words on a daily basis compared with the number of words we can use.
B) It differs from other types of perception in that it relies more heavily on bottom-up processes,such as the identification of phonemes.
C) It relies on a variety of factors,such as the phonemic restoration effect,to help resolve confusion and ambiguities.
D) It can be changed based on the context.