Imagine That an Infant Hears the Sound Ba Over and Over,until

Imagine that an infant hears the sound ba over and over,until he or she loses interest and stops listening.If the sound now changes to pa,and the infant still shows no interest,what can researchers infer?

A) The infant is able to perceive the difference between the two sounds.
B) The infant cannot perceive the difference between the two sounds.
C) The infant prefers sounds that start with "b" to sounds that start with "p."
D) The infant prefers sounds that start with "p" to sounds that start with "b."