In a Study, Four-Day-Old French Infants Habituate to the Sound

In a study, four-day-old French infants habituate to the sound of French speech. The speech then switches from French to English. How should the babies respond

A) They should show no ability to discriminate between the two sets of sounds.
B) They should show more interest in the new sounds only when the English is spoken by their mothers.
C) They should show more interest in the new sounds whether the English is spoken by a stranger or by their mothers.
D) They should show more interest in the new sounds only when the English is spoken by a voice familiar to them.