The Gasson Company uses the weighted-average method in its process costing system. The company's ending work in process inventory consists of 10,000 units, 100% complete with respect to materials and 70% complete with respect to labor and overhead. If the costs per equivalent unit are $4.50 for the materials and $2.00 for labor and overhead, the balance of the ending work in process inventory account would be:
a. $44,500
b. $50,500
c. $59,000
d. $65,000