According to the Research on Infant Speech Perception

According to the research on infant speech perception,

A) infants cannot distinguish between their native language and an unfamiliar language until they are about 1 year of age.
B) infants' ability to appreciate phoneme contrasts in an unfamiliar language improves substantially during the first 2 years of life.
C) infants are slow to develop language because they cannot recognize the basic phonemes of their native language until they are about 9 months of age.
D) by the age of about 5 months, infants respond more to their own name than to a different name.