In What Way Does Exposure to a Language at a Young

In what way does exposure to a language at a young age affect our abilities to discriminate between different sounds?

A) Infants have poor ability to distinguish between similar phonemes;however,with exposure in their first year of life,they learn how to make distinctions between sounds in their own languages.
B) Infants have the ability to distinguish between similar phonemes;however,starting from the age of six years old,they begin to have difficulty distinguishing between similar phonemes that are not in their own language.
C) People who grew up speaking different languages may differ in their perceptions of some consonants,but not in terms of their perceptions of some vowels.
D) Infants as young as one year differ in their perception of some phonemes compared with those raised to speak a different language.
E) Infants perceive sound categories categorically,but later lose those categories with repeated exposure to the first language.