please explain how to solve.

Pitt Enterprises manufactures jeans. All materials are introduced at the beginning ofthe manufacturing process in the Cutting Department. Conversion costs are incurred uniformly throughout the manufacturing process. As the cutting of material is completed, the pieces are immediately transferred to the Sewing Department. Information for the Cutting Department for the month of May follows. Work in Process, May 1 (54,000 units, 100% complete for direct materials, 70% complete with respect to conversion costs; includes $70,900 of direct material cost; $34,220 of conversion costs). Units started in May 120,000 Units completed in May 138,000 Work in Process, May 31 (36,000 units, 100% complete for direct materials; 60% complete for conversion costs). Costs incurred in May Direct materials $342, 400 Conversion costs $353,350 If Pitt Enterprises uses the FIFO method of process costing, compute the equivalent units for direct materials and conversion respectively for May. Multiple Choice O 0000 120,000 materials; 121,800 conversion. 174,000 materials; 159,600 conversion. 84,000 materials; 84,000 conversion. 121,800 materials; 120,000 conversion. 121,800 materials; 121,800 conversion