Historically, the CAPM was developed prior to the index model. The index model was widely adopted as a natural description of the stock market immediately on the heels of the CAPM because the CAPM implications so neatly match the intuition underlying the model. When all investors analyze securities in the same way and share the same economic view of the world, we say they have $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$Question $10$ Select one:a$.$homogeneous expectationsb.equal risk aversionc.asymmetric informationd.heterogeneous expectations