On its year-end balance sheet, Blue Corporation, reported cash of $665 million at year-end. The statement of cash flows reports that cash increased by $173 million during the year and that net cash flow from operating activities was $2,448 million. What was the cash flow from investing activities during the year?

A. There is not enough information to determine the amount.

B. $1,956 million cash inflow

C. $838 million cash inflow

D. $838 million cash outflow

E. $1,956 million cash outflow