The following data (in thousands of dollars) have been taken from the accounting records of Karling Corporation for the year just ended. Sales Raw materials inventory, beginning Raw materials inventory, ending Purchases of raw materials Direct labour Manufacturing overhead Administrative expenses Selling expenses Work-in-process inventory, beginning Work-in-process inventory, ending Finished goods inventory, beginning Finished goods inventory, ending What was the cost (in thousands of dollars) of the raw materials used in production during the year? $990 $40 $70 $120 $200 $230 $150 $140 $70 $50 $120 $160 Select one: a. $150. b. $160. c. $90. d. $190. 13