Question 5 (5 points) On problem 8, who is most likely responsible for the Direct Materials Efficiency Variance that was found in problem 6? Production manager CFO Human resources manager Purchasing manager Note: Short Exercises S23-6 and S23-7 must be completed before attempting Short Exercise S23-8. S23-8 Interpreting material and labor variances Refer to your results from Short Exercises S23-6 and S23-7. Requirements 1. For each variance, who in Martin's organization is most likely responsible? 2. Interpret the direct materials and direct labor variances for Martin's management