When working with the CAPM, which of the following factors can be determined with the
most precision?
The most appropriate risk-free rate, $r_{RF}$.
The beta coefficient of "the market," which is the same as the beta of an average stock.
The beta coefficient, $b_i$, of a relatively safe stock.
The market risk premium ($RP_M$).
The expected rate of return on the market, $r_M$.