Bob Has a $50,000 Stock Portfolio with a Beta of 1.2,an

Multiple Choice

Bob has a $50,000 stock portfolio with a beta of 1.2,an expected return of 10.8%,and a standard deviation of 25%.Becky also has a $50,000 portfolio,but it has a beta of 0.8,an expected return of 9.2%,and a standard deviation that is also 25%.The correlation coefficient,r,between Bob's and Becky's portfolios is zero.If Bob and Becky marry and combine their portfolios,which of the following best describes their combined $100,000 portfolio?

A) The combined portfolio's expected return will be less than the simple weighted average of the expected returns of the two individual portfolios,10.0%.
B) The combined portfolio's beta will be equal to a simple weighted average of the betas of the two individual portfolios,1.0;its expected return will be equal to a simple weighted average of the expected returns of the two individual portfolios,10.0%;and its standard deviation will be less than the simple average of the two portfolios' standard deviations,25%.
C) The combined portfolio's expected return will be greater than the simple weighted average of the expected returns of the two individual portfolios,10.0%.
D) The combined portfolio's standard deviation will be greater than the simple average of the two portfolios' standard deviations,25%.
E) The combined portfolio's standard deviation will be equal to a simple average of the two portfolios' standard deviations,25%.