A financial analyst covering Magnum Oil has determined the following four possible returns given four different states of the economy over the next period.

Probability	Return
0.10	.20
0.25	.05
0.40	0.15
0.25	0.30

Refer to Exhibit 6.13. Calculate the expected return for Magnum Oil.

	a.	17.5 percent
	b.	5.0 percent
	c.	13.7 percent
	d.	10.3 percent
	e.	20.0 percent