Which of the Following Statements Regarding the Capital Allocation Line

Which of the following statements regarding the Capital Allocation Line (CAL) is false?

A) The CAL shows risk-return combinations.
B) The slope of the CAL equals the increase in the expected return of a risky portfolio per unit of additional standard deviation.
C) The slope of the CAL is also called the reward-to-variability ratio.
D) The CAL is also called the efficient frontier of risky assets in the absence of a risk-free asset.
E) both a and d are true.