The capital market line ____________________.

Select one:

a. illustrates the risk-return relationship between risky securities and their betas.

b. illustrates the risk-return relationship between the optimal risky portfolio and borrowing or lending at the risk free rate.

c. illustrates the risk-return relationship between portfolios in the efficient frontier and borrowing or lending at the risk free rate.

d. provides the same risk-return information than the characteristic line.