STU Products uses standard costing. It allocates manufacturing overhead (both variable and fixed) to products on the basis of standard direct manufacturing labour-hours (DLH). STU Products develops its manufacturing overhead rate from the current annual budget. The manufacturing overhead budget for 2017 is based on budgeted output of 672,000 units, requiring 3,360,000 DLH. The company is able to schedule production uniformly throughout the year. A total of 72,000 output units requiring 321,000 DLH was produced during May 2017. Manufacturing overhead (MOH) costs incurred for May amounted to $355,800. The actual costs, compared with the annual budget and 1/12 of the annual budget, are as follows: Annual Manufacturing Overhead Budget 2017 Total Per Output Per DLH Amount Unit Input Unit Monthly Actual MOH MOH Budget Costs for May 2017 May 2017 $1,008,000 672,000 $1.50 1.00 $0.30 0.20 $84,000 56,000 $84,000 117,000 Variable MOH Indirect mfg labour Supplies Fixed MOH Supervision Utilities Depreciation Total 571,200 369,600 705.600 $3,326,400 0.85 0.55 1.05 $4.95 0.17 0.11 0.21 $0.99 47,600 30,800 58,800 $277,200 41,000 55,000 58,800 $355,800 Calculate the following amounts for STU Products for May 2017: 1. Total manufacturing overhead costs allocated 2. Variable manufacturing overhead spending variance 3. Fixed manufacturing overhead spending variance 4. Variable manufacturing overhead efficiency variance 5. Production-volume variance Be sure to identify each variance as favourable (F) or unfavourable (U)