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? The book value of equity by $ billion from the end of the previous year, and was (Select from the drop-down menus and round to three decimal places.) \begin{tabular}{lrrrrr} Balance Sheet: & 3/31/2019 & 12/31/2018 & 9/30/2018 & 6/30/2018 \\ \hline Assets & & & & \\ Current Assets & & & & \\ Cash and cash equivalents & 293 & 300 & 255 & 232 \\ Net receivables & 401 & 362 & 385 & 460 \\ Inventory & 374 & 342 & 437 & 306 \\ Other current assets & 60 & 43 & 53 & 45 \\ \hline Total Current Assets & 1,128 & 1,047 & 1,130 & 1,043 \\ Long-term investments & 128 & 97 & & 200 \\ Property, plant, and equipment & 979 & 991 & 995 & 1,052 \\ Goodwill & 744 & 748 & 736 & 742 \\ Other assets & 777 & 837 & 921 & 797 \\ \hline Total Assets & 3,756 & 3,720 & 3,782 & 3,834 \\ Liabilities & & & & \\ Current Liabilities & 476 & 1,467 & 922 & 980 \\ Accounts payable & 410 & 2 & 173 & 288 \\ Short/current long-term debt & & & & \\ Other current liabilities & 1,286 & 1,469 & 1,095 & 1,268 \\ \hline Total Current Liabilities & 2,381 & 2,124 & 474 & 475 \\ Long-term debt & 435 & 574 & 559 & 551 \\ Other liabilities & 4,102 & 4,167 & 2,128 & 2,294 \\ \hline Total Liabilities & 346 & 447 & 1,654 & 1,540 \\ \hline Total Shareholder's Equity & 3,756 & 3,720 & 3,782 & 3,834 \end{tabular}