Black Company uses the weighted-average method in its process costing system. The company's ending work in process inventory consists of 5,000 units, 80% complete with respect to materials and 50% complete with respect to labour and overhead. If the total dollar value of the inventory is $60,000 and the cost per equivalent unit for labour and overhead is $8.00, the cost per equivalent unit for materials must be? Group of answer choices $4.00. $5.00. $8.00. $10.00