PJS Limited Produces Liquid Industrial Cleaners

PJS Limited produces liquid industrial cleaners. At 1 December, work in progress consisted of 800 litres of product which were 75% complete with respect to materials and 60% complete with respect to labour and overhead. 8,000 litres of liquid industrial cleaner were produced during December and transferred to the finished goods store. At 31 December, work in progress consisted of 600 litres of product which were 40% complete with respect to materials and 30% complete with respect to labour and overhead. PJS uses the weighted average cost valuation method to value units of work in progress and finished goods. What were the equivalent units of material and conversion costs to be applied in determining the cost of finished goods and work in progress in December?

A) Material: 7,640 equivalent units, Conversion: 7,700 equivalent units.
B) Material: 8,240 equivalent units, Conversion: 7,700 equivalent units.
C) Material: 7,640 equivalent units, Conversion: 8,180 equivalent units.
D) Material: 8,240 equivalent units, Conversion: 8,180 equivalent units.