The following information is available about the August transactions of the Helpful Tool Company:

Invoices for product costs paid during the month	$ 493,000
Product costs charged to work in process	$ 737,000
Cost of finished goods manufactured	$ 718,000
Cost of goods sold	$ 739,000

The product costs to be deducted from revenue in August amount to:

1. $739,000.
2. $493,000.
3. $718,000.
4. $737,000.