I dont know how do calculate this

Purchases 15,000 a. $15,300 b. $15,200 c. $15,100 d. $15,000 P19. The gross profit of Larry Company for 2015 is $300,000, cost of goods manufactured is 000, the beginning inventories of goods in process and finished goods are $28,000 and $35,000, respectively and the ending inventories of goods in process and finished goods are $50,000 and $70,000 respectively. The cost of goods sold of Larry Company for 2015 must have been a. $378,000. b. S265,000. c.$278,000. 3 d $365,000 ods in prles