The following data (in thousands of dollars) have been taken from the accounting records of karmint corporation for the just completed year: sales - $830; raw materials inventory, beginning - $50, raw materials inventory, ending - $40; purchases of raw materials - $150; direct labor - $140: manufacturing overhead - $160; administrative expenses - $120; selling expenses - $150; work in process inventory, beginning - $30; work in process inventory, ending - $50; finished goods inventory, beginning - $80; finished goods inventory, ending - $100.the cost of the raw materials used in production during the year (in thousand of dollars) was: a) $190.b) $160.c) $140.d) $200.