john, age 35, considers himself to be an average risk investor. he has a modest investment portfolio designated for his retirement. generally, he would select which of the following stocks for his investment portfolio? a) he would prefer xyz stock with low risk and low positive skewness. b) he would prefer abc stock with high risk and high positive skewness. c) he would prefer jem stock with low risk and high positive skewness. d) he would prefer ghi stock with high risk and low positive skewness.