Hanson Inc. has the following direct labor standard to manufacture one Zippy 1.5 standard hours per Zippy at $12.00 per direct labor hour Last week, 1,550 direct labor hours were worked at a total labor cost of $18,910 to make 1,000 Zi ppies Hanson's labor rate variance (LRV) for the week was: a. $310 unfavorable b. $310 favorable c. $300 unfavorable d. $300 favorable Hanson's labor efficiency variance (LEV) for the week was: a. $590 unfavorable. b. $590 favorable. c. $600 unfavorable. d. $600 favorable