(Choose 1 answer)
A comparison of coffee prices at 4 randomly selected grocery stores in San Diego showed increases from the previous month of 12, 15, 17 and 20 cents for a 1 pound bag. Find the variance of this sample of price increases.
A. 26/3
B. 32/3
C. 34/3
D. 28/3
E. None of the other choices is correct
