The controller of Joy Co has requested a quick estimate of the manufacturing supplies needed for July when production is expected to be 470,000 units. Below are actual data from the prior three months of operations: Production in units March 450,000 Manufacturing supplies $723,060 853,560 April 540,000 May 480.000 766,560 Using these data and the high-low method, what is the best estimate of the cost of manufacturing supplies that would be needed for July? (Assume that this activity is within the relevant range.) Select one: a. $752,060 O b. $755,196. c. $805,284 O d. $1,188,756