4. (10 points) Fantastic Furniture manufactures plastic lawn furniture in a continuous proces The company pours molten plastic into molds and then cools the plastic. Materials are added at the beginning of the process, and conversion is considered uniform through the period. Occasionally, the plastic does not completely fill a mold because of air pockets, an the chair is then considered spoilage. Normal spoilage is 6% of the good units that pass inspection. The following information pertains to March, 2021: Beginning inventory 1,400 units (100% complete for materials; 20% complete for conversion costs) Units started 12,000 units Unites in ending work in 1,100 units (100% complete for materials; 70% complete for process conversion costs) Fantastic Furniture had 1,000 spoiled units in March, 2021. (Show all your work to receive full credits.) Required: a. Using the format used in class, compute the normal and abnormal spoilage units, assuming the inspection point is at (a) the 15% stage of completion, (b) the 40% stage of completion, and (c) the 100% stage of completion. Inspection point 40% 15% 100% Normal spoilage in units Abnormal spoilage in units