The Grayson Company uses standard costs to account for its production of a specialty cleaning product is as follows een Clean. The standard cost of materials and direct labour to produce one bottle of Green Clean aterial A15 litres at $0.80 per litreS 1.20 Material B 0.5 itres at $2.00 per litre Direct labour 025 hours at 310 00 per hour 1.00 2.50 Both material A and material B are added at the start of the process. Production data for June 2016 are as follows a. Beginning work in process, 5,000 units, 25% complete b. Started during June, 18,000 units c Ending work in process, 6,000 units, 60% complete. d. No units were spoiled e. 28,000 litres of material A was issued to production t 12.000 itres of material B was used during June g Direct labour worked totailed 4,800 hours at a cost of $50000 for the month Required: all of the material and labour variances possible from the preceding data for the month of June the effect of each variance by, selecting F for favourable. "U" for unfavourable, and None" for no effect fi.. zero variance).) Material Variances Mix Variance A Mix Varlance B Yield Variance A Yleld Variance B Labour Variances Rate Variance Efficiency Varlance Price Varlance Quantity Variance