Consider this scenario: A firm decides to invest half a million dollars in a start-up solar energy company rather than in a tried-and-true company. The start-up solar energy company makes a windfall profit in two years. Which of the following BEST explains why the investor gets a high rate of return with a start-up company as compared to the rate of return if investing in a tried-and-true company? A- A half a million dollars is a lot of money. B- The investor was too cautious. C- The investor assumed a higher level of risk. D- The investor correctly predicted that the solar industry would take off.