6 pts The following data has been provided by Company A Budget Quantity Cost per unit Actual Quantity Cc Sales (units) 1,000 $20.00 1,050 Materials (kg) 2,500 $5.00 2.450 Labor (hours) 500 $10.00 550 a) Calculate the Sales, Materials, Labor and total variances, please show your workings b) Ust one advantage and one disadvantage of variance analysis (2 points) Edit View Insert Format Tools Table 120 Paragraph BI U Ave Tv