Researchers Conducted a Study That Used Magnetoencephalography to Measure Brain

Researchers conducted a study that used magnetoencephalography to measure brain activity in a group of experienced musicians and a control group of nonmusicians listening to pure tones. The results showed that the:

A) patterns of brain activity differed for the two groups.
B) magnitude of brain activity did not differ across the two groups.
C) magnitude of brain activity was greater for the experienced musicians compared with nonmusicians.
D) magnitude of brain activity was greater for the nonmusicians compared with the experienced musicians.