Luna Manufacturing uses a process costing-system. Luna uses the weighted average method. The following information pertains to operations for the month of January: Units Beginning work-in-process inventory, January 1 14,000 Started in production during January 370,000 Completed production during January 187,000 Ending work-in-process inventory, January 31 197,000 The beginning inventory was 80% complete for materials and 40% complete for conversion costs. The ending inventory was 85% complete for materials and 30% complete for conversion costs. Costs pertaining to the month of January are as follows: Beginning inventory costs are: materials of $152,800 and conversion cost of $165,600.

Costs incurred during January are: materials used of $1,849,200 and conversion cost of $2,410,800.

What is the total cost of the units in the ending work-in-process inventory on December 31? (Round the calculations to two decimal places and the final answer to the nearest dollar.) a.$3,175,640

b.$946,093

c.$1,564,870

d.$618,777