Study the problem below and compute for the Expected return for Stock A and Stock B; the Variance and the Standard Deviation.

STATE	Probability	A	B
Boom	?	0.2	0.1
Normal	0.25	0.3	0.4
Recession	0.4	0.4	0.2

Round off the final answers in 4 decimal points in all answers. For uniformity's sake, we will not use percentages for the rate of returns, we will just use its decimal form.