5. (Chapter 22) Your cousin is an employee of a company that has publicly-traded stock. Your cousin's company offers a retirement account where employees can allocate their retirement funds among four investment options: (1) A money-market fund (2) An investment-grade corporate bond fund (3) A global equity fund (4) Shares of the company's stock. Your cousin wants to invest all of his savings in option (4) because he "knows the company like the back of his hand" and "is very bullish on the company's prospects." What advice would you give your cousin