> Moving to another question will save this response. Question 7 of 11 estion 7 2 points Your parents are considering adding one and only one) additional stock to their investment portfolio. They are risk-averse and already hold a well diversified portfolio All the potential te wecks here the same expected returns of 12%. Which stock should your parents add to their portfolio (assuming that expected return is sufficient to compensate for risk? a. one with the smallest standard deviation b. one with the smallest beta c. they should be indifferent as the expected returns are the same d. additional information needed. e. one with the highest required return