In early 2015, Ford Motor (F) had a book value of equity of $24.3 billion, 4.1 billion shares outstanding, and market price of $15.72 per share. Ford also had cash of $22.1 billion, and total debt of $120.7 billion. Three years later, in early 2018, Ford had a book value of equity of $35.3 billion, 10.3 billion shares outstanding with a market price of $11.51 per share, cash of $26.4 billion, and total debt of $153.8 billion. Over this period, what was the change in Ford's a. market capitalization? b. market-to-book ratio? c. enterprise value