During the month of January, Cain Inc. had total manufacturing costs of $220,000. They incurred $80,000 of direct labor cost and $60,000 of overhead cost during the month. If the materials inventory on January 1 was $6,000 less that the materials inventory on January 31, what was the cost of materials purchased during the month? $74,000 $80,000 $86,000 none of these