Airon Company recently completed 11,400 units of its single product, consuming 46,000 labor hours that cost the firm $745,200. According to manufacturing specifications, each unit should have required 4 hours of labor time at $16.60 per hour. On the basis of this information, determine Airons labor rate variance and labor efficiency variance. A. B. C. D. E. Rate $18, 240F $18, 240F $18,400F $18,400F $18,400U Efficiency $6,480F $6,480U $6,640F $6,640U $6,640U Multiple Choice Choice A Choice B Choice C