Calculate gross profit from the following information provided to you by Websearch Corporation. Administrative expenses Direct labor $100 100 Finished goods inventory - January 1 balance 320 Finished goods inventory - December 31 balance 360 Manufacturing overhead 190 Raw materials - purchases 180 Raw materials inventory - January 1 balance 160 Raw materials inventory - December 31 balance 170 Revenues 800 Selling expenses 160 Work in process inventory - January 1 balance 270 Work in process inventory - December 31 balance 280 Select one: O a. $70 O b. $930 Oc. $230 O d. $390 e. $130