Investment A has an expected return of 14% with a standard deviation of 4%, while investment B has an expected return of 20% with a standard deviation of 9%. Therefore, _____.
1) A risk averse investor will definitely select investment A because the standard deviation is lower
2) A rational investor will pick investment B because the return adjusted for risk (20% - 9%) is higher than the return adjusted for risk for investment A ($14% - 4%)
3) It is irrational for a risk-averse investor to select investment B because its standard deviation is more than twice as big as investment A's, but the return is not twice as big
4) Rational investors could pick either A or B, depending on their level of risk aversion