In early 2015 , Ford Motor (F) had a book value of equity of $24.9 billion, 3.9 billion shares outstanding, and a market price of $16.26 per share. Ford also had cash of $22.2 billion, and total debt of $118.5 billion. Three years later, in early 2018 , Ford had a book value of equity of $34.7 billion, 10.4 billion shares outstanding with a market price of $11.05 per share, cash of $26.3 billion, and total debt of $158.2 billion. Over this period, what was the change in Ford's a. market capitalization? b. market-to-book ratio? c. enterprise value