If You Have an Increase in Accounts Recieveable of $10,000;

If you have an increase in accounts recieveable of $10,000; an increase in inventory of $15,000; and an increase in accounts payable of $4,000,what is the change in net working capital?

A) $ 29,000.00
B) $ 21,000.00
C) $ (19,000.00)
D) $ (21,000.00)