Bad Brad's BBQ Had Cash Flows for the Year as Follows

Bad Brad's BBQ had cash flows for the year as follows ($ in millions) :
CASH RECEIVED FROM:
$\begin{array} { l r } \text { Customers } & \$ 1,800 \\ \text { Interest on investments } & 200 \\ \text { Sale of land } & 100 \\ \text { Sale of common stock } & 600 \\ \text { Issuance of debt securities } & 2,000 \\\text { CASH PAID FOR: }\\\text { Interest on debt } & \$ 300 \\\text { Income tax } & 80 \\\text { Debt principal reduction } & 1,500 \\\text { Purchase of equipment } & 4,000 \\\text { Purchase of inventory } & 1,000 \\\text { Dividends on common stock } & 200 \\\text { Operating expenses } & 500\end{array}$

-Bad Brad's would report net cash inflows (outflows) from investing activities in the amount of:

A) $(4,000) .
B) $100.
C) $(3,900) .
D) $(1,900) .