The balance in accounts receivable at the beginning of 2013 was $660. During 2013, $2,200 of credit sales were recorded. If the ending balance in accounts receivable was $220 and $200 in accounts receivable were written off during the year, the amount of cash collected from customers during 2013 was:

	$2,200.
	$2,440.
	$2,640.
	$2,860.