Based on Research in the Area of Auditory-Visual Relations, Which

Based on research in the area of auditory-visual relations, which of the following correctly describes whom infants will look more at?

A) Even at 4 months of age, babies will look more at a female than a male when they hear a male voice, unless the male voice is their father's voice.
B) Since babies tend to look more at people's hair than mouths, they do not distinguish between the mouths of speaker who say pep and the mouths of speakers who say pop.
C) As early as 3.5 months of age, babies look more at their mother when they hear her voice and at their father when they hear his voice.
D) All of the alternatives are correct.