Required information [The following information applies to the questions dispilayed below.) Benton Corporation manufactures computer microphones, which come in two models: Standard and Premium. Data for a representative quarter for the two models follow. Martufacturing overhead in the plant has thee main functions: supervision, setup laboc and incoming material inspection. Dota on manufacturing overhead for a representative quarter foliow: Required: a. Benton currently applies overheod on the bosis of direct labor cost. What is the predetermined overheod rate for the quarter? b. The CFO and the plant controller at Benton are thinking of adopting an ABC system. They have tentatively chosen the following cost difvers: direct lobor cost for supervision. production runs for setup labof, and direct materlal dollars for inconing inspection. Compute the cost driver rases for the proposed system at Blenton. Note: Enter your answers rounded to 2 decimel ploces