a. Determine how many units of each subassembly Roedel should manufacture and how many units Roedel should purchase. What is the total manufacturing and purchase cost associated with your recommendation?b. Suppose Roedel is considering purchasing new machinery to produce DVD cartridges. For the new machinery the setup cost is $3000; the manufacturing time is 2.5 minutes per cartridge and the manufacturing cost is $2.60 per cartridge. Assuming that the new machinery is purchased determine how many units of each subassembly Roedel should manufacture and how many units of each subassembly Roedel should purchase. What is the total manufacturing and purchase cost associated with your recommendation? Do you think the new machinery should be purchased?Explain.