4. HPP Ltd. has an abbreviated balance sheet as follows (in millions): The firm has earnings after taxes of $7 million and is subject to a marginal tax rate of 30%. The company wishes to issue new long-term debt at 8% to increase its base of net fixed assets. Assume there are no interest associated with current liabilities. The present debt, however, carries several restrictive covenants as follows: a. The ratio of net long-term assets to long-term debt must be at least 2. How much additional debt can the firm issue? b. The total debt to equity ratio must remain below 0.80 . How much additional debt can the firm issue