Which of the Following Is True of Infants' Ability to Differentiate

Which of the following is true of infants' ability to differentiate sounds?

A) Infants are born with the ability to ignore small, meaningless variations in the sounds of their native language.
B) Infants can discriminate the sounds of their parent's voices by 3½ months of age.
C) By the age of one week, infants perceive differences between speech sounds that are highly similar.
D) By the age of one month, infants reliably discriminate three-syllable words.