A firm reports that in a certain year it had a net income of $4.3 million, depreciation expenses of $3.0 million, capital expenditures of $2.1 million, and Net Working Capital decreased by $1.2 million. What is the firm's free cash flow for that year? OA. $4.6 million OB. $40 million O C. $6.4 million OD. 510 6 million