After a tumultuous period in the stock? market, Logan Morgan is considering an investment in one of two portfolios. Given the information that? follows, which investment is? better, based on risk? (as measured by the standard? deviation) and return as measured by the expected rate of?return?

Portfolio A		Portfolio B
Probability	Return	Probability	Return
0.22	?4?%	0.12	4?%
0.43	17?%	0.32	10?%
0.35	23?%	0.35	10?%
		0.21	15?%