Oakland is into trading selling of gift cards. The following budgeted and actual contribution statement is for a component sold by Oakland Plc. This transaction is for the month of August 2020: Required: a).Compute: i). the sales price variance, (2marks) ii) the net sales volume variance, and (2marks) iii) the cost of goods sold variance iv) the operating cost variance for the month of August 2020. (2marks) Total (8marks) b). Use the calculations in part a. to reconcile the budgeted and actual contribution to corporate costs and profits. (6marks) c. How would you evaluate the performance of Oakland Plc's manager? (2marks for each point, maximum 2 points) (Word count 120). (4marks) d. How would you explain your understanding of the benefits of budgetary controls to a friend of yours. (Maximum of 4 points, 3 marks to each) (Word count 200) (12marks)