One Sample Is Selected to Represent Scores in Treatment 1

Multiple Choice

One sample is selected to represent scores in treatment 1 and a second sample is used to represent scores in treatment 2.Which set of sample statistics would present the clearest picture of a real difference between the two treatments?

A) M1 = 36, M2 = 40, and both variances = 43
B) M1 = 36, M2 = 40, and both variances = 6
C) M1 = 38, M2 = 40, and both variances = 43
D) M1 = 38, M2 = 40, and both variances = 6