Wilson Manufacturing Company's accounting records reflect the following inventories Dec. 31, 2018 Dec. 31, 2017 $380,000$340,000 aw materials inventory Work in process inventory330,000 320,000 inished goods inventory 290,000 280,000 During 2018, $380,000 of raw materials were purchased, direct labor costs amounted to $650,000, and manufacturing overhead incurred was $650,000. Wilson Manufacturing Company's total manufacturing costs incurred in 2018 amounted to Select one: a. $1,640,000. b. $2,020,000. c. $1,680,000. d. $1,720,000