The test scores of the students in four classes are summarized below. Answer the questions about them.Class A: The range of scores is 41 and the mean score is 113.Class B: The range of scores is 49 and the mean score is 108.Class C: The range of scores is 48 and the mean score is 111.Class D: The range of scores is 45 and the mean score is 112.75°F(a) Based on the information above, which class has the highest scores on average?Class AO Class BO Class CO Class D(b) Based on the information above, which class's scores have the most variability?Class AClass BO Class CO Class DContinueI need help with this math problem.