A Business Has Opening Inventory of 200 Units Which Cost

Multiple Choice

A business has opening inventory of 200 units which cost £5.00 per unit and during the year it bought an additional 300 units at £6.00 and 400 units at £7.00. It sold 800 units during the same period.
-the cost of sales using the weighted average cost basis of inventory valuation would be:

A) £4900
B) £4977
C) £5124
D) £5600
E) None of the above