The Standard Deviation of a Portfolio Will Tend to Increase

Multiple Choice

The standard deviation of a portfolio will tend to increase when

A) the portfolio concentration in a single cyclical industry increases.
B) one of two stocks related to the airline industry is replaced with a third stock that is unrelated to any other stock in the portfolio.
C) a risky asset in the portfolio is replaced with U.S.Treasury bills.
D) the weights of the various diverse securities become more evenly distributed.
E) short-term bonds are replaced with Treasury Bills.