Four-Day-Old French Infants Were Habituated to the Sound of French

Four-day-old French infants were habituated to the sound of French speech (their pacifier sucking rates decreased) . When the speech was switched from French to English, how did the babies respond?

A) They showed no ability to discriminate between the two sets of sound.
B) They dishabituated only when the English was spoken by their mothers.
C) They dishabituated-their pacifier sucking rate increased.
D) They dishabituated only when the English was spoken by a voice that was familiar to them.