Remaining Time: 55 minutes, 05 seconds. Question Completion Status: Moving to another question will save this response. Quest on 29 Which of the statements below best captures one of the main problems with the arbitrage pricing theory, APT? its use of several factors instead of a single market index to explain the risk-return relationship the model fails to identify the key macroeconomic variables in the risk-return relationship that the APT requires an even larger number of unrealistic assumptions than does the CAPM the introduction of nonsystematic risk as a key factor in the risk-return relationship A Moving to another question will save this response