A. Fair, Inc. is considering an investment in one of two common stocks. Given the information that follows, which investment is better, based on risk (as measured by the standard deviation) and return?

Stock	A	Stock	B
Probability	Return	Probability	Return
0.3	12%	0.2	15%
0.4	16%	0.3	6%
0.3	18%	0.3	13%
0.2	21%