You are responsible for making purchasing decisions for your program. There are three vendors with different product available at different grades. Using the information below: How many finished goods will you get out of the devices you purchase? Show your work. What will the total cost and yield be on the finished goods? Show your work. Yield and cost information: Available Units Yield Cost A-grade 70 95% $900 B-grade 30 85% $750 C-grade 50 65% $150