You receive an unsolicited call from a stockbroker, who offers you an investment that he says is low risk but should you ask before you invest your money? 1. Why does the investment have high returns if it is safe? II. Are there other brokers in your firm offering this deal to clients? III. Why are you calling me, and what benefit do you derive from offering this deal to me? O a. I, II, and III O b. I and II O c. I and III O d. I only