C Mobility Partners makes wheelchairs and other assistive devices. For years it has made the rear wheel assembly for its wheelchairs. A local bicycle manufacturing firm, Trailblazers, Inc., offered to sell these rear wheel assemblies to Mobility of Mobility makes the assembly, its cost per rear wheel assembly is as follows (based on annual production of 1,800 units) Direct materials Direct labor Variable overhead Fixed overhead Total $ 35 112 18 44 $209 Trailblazers has offered to sell the assembly to Mobility for $181 each. The total order would amount to 1800 rear wheel assemblies per year, which Mobility's management will buy instead of make if Mobility can save at least $20,000 per year. Accepting Italblozets's offer would eliminate annual fixed overhead of $40250 Required: Required: a. Prepare a schedule that shows the total differential costs (Select option "higher" or "lower", keeping Status Quo as the base, Select "none" if there is no effect.) Status Quo Alfombi Disco Trailblazers offer Materials Labor Variable overhead Fixed overhead applied Total costs b. Should Mobility make rear wheel assemblies or buy them from Trailblazers? Make O Buy