Davids Company's cash increased by $400 million during 20x1. Investing and financing activities created positive cash flow totaling $670 million in 20x1. What were net cash flows from operating activities in David's statement of cash flows for the year ended 20x1?

Inflow of $400 million.Outflow of $270 million.Inflow of $800 million.Outflow of $400 million.