To Date, Research Supports Which of the Following Claims

To date, research supports which of the following claims?

A) Newborn infants prefer to listen to their father's voices over strange male voices.
B) Six-month-olds can distinguish between lullabies played in different keys.
C) Babies whose mothers score high on scales of verbal output while pregnant tend to talk earlier than babies with mothers who spoke lesser amounts when pregnant.
D) Newborns are as sensitive to sound as adults.