A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam is equal to 45 minutes. A Type II error would occur if the professor concludes that the average exam time is

A. not equal to 45 minutes when, in reality, the average time is equal to 45 minutes.

B. not equal to 45 minutes when, in reality, the average time is greater than 45 minutes.

C. equal to 45 minutes when, in reality, the average time is less than 45 minutes.

D. equal to 45 minutes when, in reality, the average time is not equal to 45 minutes.