The expected annual return of Solar solutions is:
0.5*$1000 + 0.35*$200 - 0.15*$600 = $480
The expected annual return of Frontline medical is:
0.8*$750 - 0.2*$100 = $580
B. Frontline Medical has the higher risk of loss, but it is likely the better investment over time, because the annual expected return is $100 (= $580 - $480) greater than Solar Solution's