Advantage(s) of the APT is(are) Othat the model provides specific guidance concerning the determination of the risk premiums on the factor portfolios. that the model does not require a specific benchmark market portfolio. Othat the model provides specific guidance concerning the determination of the risk premiums on the factor portfolios and that the model does not require a specific benchmark market portfolio. that the model does not require a specific benchmark market portfolio and that risk need not be considered