Mohendran operates a standard costing system. The budgeted data for October 2022 was: Total production and sales 4000 units, Selling Price per unit is RM230 Per unit Direct materials 3 kilos at RM6 per kilo Direct labour 9 hours at RM10 per hour Fixed overheads RM1 per direct labour hour The actual results for October were: Output 4500 units, Selling Price per unit RM310 Direct materials 14000 kilos at RM5.75 per kilo Direct labour 37000 hours at RM10.50 per hour Total fixed overheads RM40 000 All units produced were sold. Calculate and state possible TWO (2) causes of favourable or adverse for following variances for October 2022: (Show all the formula and workings clearly) I. Material Price Variance. II. Material Usage Variance. III. Labour Rate Variance. IV. Labour Efficiency Variance. V. Sales Price Variance. VI. Sales Volume Variance