Plantinga and Trainor (2005) Conducted a Study in Which Six-Month-Old

Plantinga and Trainor (2005) conducted a study in which six-month-old infants were exposed to a melody repeatedly over seven days. On the eighth day, the infants either heard the familiar melody transposed to a different starting note or heard an unfamiliar melody. According to this study, when given a choice, young infants looked longer toward the speaker playing:

A) the familiar melody.
B) the unfamiliar melody.
C) the transposed version of the familiar melody.
D) either the familiar or the transposed version of the melody.