Refer to the portions of the 2018 and 2019 balance sheets provided below. Calculate the change in net working capital during the year 2019.

	2018	2019			2018	2019
Cash	$380	$770		Notes Payable	$510	$550
Accts. Receivable	$1,290	$1,470		Accounts Payable	$720	$830
Inventory	$880	$950		Long Term Debt	$1,180	$1,090

Group of answer choices

$720

$580

$1,810

$490