Aaron Compony recenty completed 10,600 units of its single product, consuming 32,000 labor hours that cost the firm $480,000. According to manutacturing specificotions, eoch unit shouid have required 3 hours of labor time at $15.40 per houc Determine Aaron's iabor rate variance anc iabor efficiency variance Mutiple Chalce A labor rate variance of $12,720 tavorable: a labor efficiency variance of $3,000 faverabilo A labor rate variance of $12,720 favorable; a labor efficlency variance of $3,000 unfevorable. A labor rate variance of $12,800 tavorable; a labor efficiency variance of $3,080 favorable. A labor rate variance of $12,800 favorable; a labor efficiency variance of $3,080 unfavorable. A labor rate variance of $12.800 unfavorable; a labor efficlency variance of $3.080 unfervotable