The test scores of the students in four classes are summarized below. Answer the questions about them. Class A: The mean score is 118 and the range of scores is 33. Class B: The mean score is 112 and the range of scores is 36. Class C: The mean score is 109 and the range of scores is 38. Class D: The mean score is 116 and the range of scores is 32. (a) Based on the information above, which class has the lowest scores on average? O Class A O Class B O Class C O Class D C (b) Based on the information above, which class's scores have the least variability? O Class A O Class B O Class C O Class D