Some balance sheet information is shown here (all values in millions of dollars). a. What change in the book value of the company's equity took place at the end of 2018? b. Is the company's market-to-book ratio meaningful? Is its book debt-equity ratio meaningful? Explain. a. What change in the book value of the company's equity took place at the end of 2018? places.) b. Is the company's market-to-book ratio meaningful? Is its book debt-equity ratio meaningful? Explain. (Select all the choices that apply.) A. Because the book value of equity is positive in this case, the company's market debt-equity ratio may be used in comparison. B. Because the book value of equity is negative in this case, the company's market debt-equity ratio may be used in comparison. C. Because the book value of equity is negative in this case, the company's market-to-book ratio and its book debt-equity ratio are not meaningful D. Because the book value of equity is positive in this case, the company's market-to-book ratio and its book debt-equity ratio are not meaningful. Some balance sheet information is shown here (all values in millions of dollars). a. What change in the book value of the company's equity took place at the end of 2018? b. Is the company's market-to-book ratio meaningful? Is its book debt-equity ratio meaningful? Explain. a. What change in the book value of the company's equity took place at the end of 2018? places.) b. Is the company's market-to-book ratio meaningful? Is its book debt-equity ratio meaningful? Explain. (Select all the choices that apply.) A. Because the book value of equity is positive in this case, the company's market debt-equity ratio may be used in comparison. B. Because the book value of equity is negative in this case, the company's market debt-equity ratio may be used in comparison. C. Because the book value of equity is negative in this case, the company's market-to-book ratio and its book debt-equity ratio are not meaningful D. Because the book value of equity is positive in this case, the company's market-to-book ratio and its book debt-equity ratio are not meaningful