What Can We Conclude About the Two Major Explanations for Speech

What can we conclude about the two major explanations for speech perception?

A) Humans show categorical perception for nonspeech sounds, which argues against a phonetic module approach.
B) Humans show categorical perception for nonspeech sounds, which argues for a phonetic module approach.
C) Humans cannot use visual cues as aids to the perception of phonemes, which argues against a general mechanism approach.
D) Infants use a general mechanism approach, whereas adults typically use a phonetic module approach.