Last year, Shatner Shoes had negative cash flow from operations; however, cash on its balance sheet increased. Which of the following could explain this?

a. The company repurchased some of its common stock.

b. The company had large depreciation and amortization expenses.

c. The company issued a large amount of long-term debt.

d. The company dramatically increased its capital expenditures.

e. All of the statements above are correct.