7. Wright Manufacturing makes picnic tables in three sizes: small, medium, and large. The picnic tables can be sold with or without a finishing stain. The company's managers are currently trying to decide which picnic tables, if any, should be stained in order to maximize profits. The following information is available: Small Medium Large Initial Sales Price $60 $100 $175 Initial Cost 20 40 55 Sales price after staining 70 125 210 Cost of staining 11 15 20 Number sold per month 100 300 175 What is the maximum amount that net income could increase each month with further processing? A. $81,125 B. $82,125 c. $ 5,525 D. $ 5,625