The assumptions of the CAPM model include _______________

I. The stock's price can be affected by investor's trades.

II. All investors plan for various holding periods.

III. All investors analyze securities in the same way and share the same economic view of the world.

IV. All investors have different levels of risk aversion.

A. I, II, and III only

B. II and III only

C. I, III, and IV only

D. III and IV only