4. Select only the statement that are true: A. When dealing with very complex issues, models are often used to simplify the situation by focusing on a few essential variables. B. Earnings per share can be calculated by dividing the total earnings available to the company's stockholders by the number of common stock outstanding. C. None of the other statements/options is correct. D. The higher the risk associated with a project or a corporation the lower the required expected return by investors would be