when the investor does not wish to make the assumption that he can borrow and lend at the riskless rate of interest, the solution developed in the last section must be modified. However, much of the analysis can still be utilized.the riskless lending and borrowing rate of 5% led to the portfolio B.if the riskless lending and borrowing rate had been 4%, the inventor would invest in portfolio A.if the investor's lending and borrowing rate was 6%, the investor would