Suppose your firm wanted to expand into a new line of business quickly, and that management anticipated that the new line of business would constitute over 80 percent of your firm's operations within three years. If the expansion was going to be financed partially with debt, would it still make sense to use the firm's existing cost of debt, or should you compute a new rate of return for debt based on the new line of business? In 1-2 well-developed paragraphs, explain your choice.