The accounting records of Dolphin Company revealed the following information: Total manufacturing costs $ 600,000 Work-in-process inventory, Jan. 1 $63,000 Work-in-process inventory, Dec. 31 $85,000 Finished-goods inventory, Jan. 1 $153,000 Finished-goods inventory, Dec. 31 $130,000 Dolphin's cost of goods sold is: A-$599,000. B-$623,000. C-$601,000. D-None of these. E-$578,000.