Which Statement Demonstrates the Results of Woldorff Et Al

Which statement demonstrates the results of Woldorff et al.'s (1993) neuroscience study of dichotic listening?

A) Activity levels are higher for brain regions associated with the unattended ear.
B) Activity levels for brain regions associated with both ears are dependent on the type of stimulus presented.
C) The primary auditory cortex is very active for the unattended ear,but the primary auditory cortex and the surrounding language areas are very active for the attended ear.
D) Activity levels are higher for brain regions associated with the attended ear.