2 Chris Sandvig Irrigation, Inc., has summarized the price list from four potential suppliers of an underground control valve. See the table below. Annual usage is 700 valves; order cost is $13 per order; and annual inventory holding costs are $7.55 per unit. Vendor A Vendor B Vendor C Vendor D Quantity Price Quantity Price 1-9 $35.00 1-14 $34.75 Quantity 1-24 Price $34.50 Quantity 1-74 Price $34.25 10-14 34.75 15-49 34.00 25-74 33.75 75-199 33.00 15-49 33.55 50-99 32.80 75-199 32.50 200+ 31.00 50-99 32.35 100-299 31.60 200+ 31.10 100-299 31.15 300+ 30.50 300+ 30.75 Which vendor should be selected and what order quantity is best if Sandvig Irrigation wants to minimize total cost? Chris Sandvig Irrigation should order units at a time from [ (enter your response as a whole number). Vendor D Vendor C Vendor A Vendor B