Question 17 1 pts Bob holds a portfolio of 20 stocks from different industries, whereas Sharon holds only one stock in her portfolio. Assuming they each add a stock to their portfolio, which of the following is most likely? Relative to Bob's portfolio, Sharon's portfolio will experience the: O larger increase in total risk. larger increase in return. larger decrease in total risk. O larger decrease in market risk. Question 18 1 pts When using the Markowitz model, aggressive investors would select portfolios on the left end of the efficient frontier. O True O False