Barbicon manufacturing company uses a predetermined manufacturing overhead rate based on a percentage of direct labor cost. At the beginning of 2012, they formulated a rate of 20% times the direct labor cost. In June, 2012, Barbicon completed job number 13C. Job stats are as follows: direct materials cost: 6220, direct labor cost: $900, direct labor hours: 32 hours, and units of product produced: 250 kilos. How much was the total job cost? a) $7300 b) $8364 c) $180 d) $7120