In early 2012, General Electric (GE) had a book value of equity of

$ 115

billion,

10.1

billion shares outstanding, and a market price of

$ 17.00

per share. GE also had cash of

$ 85

billion and total debt of

$ 411

billion. Four years later, in early 2015, GE had a book value of equity of

$ 129

billion,

10.4

billion shares outstanding with a market price of

$ 25.00

per share, cash of

$ 86

billion, and total debt of

$ 302

billion. Over this period, what was the change in GE's

a. market capitalization?

b. market-to-book ratio?

c. enterprise value?