C. Mirza Water Assembly Plant wants to know the labor cost variance incurred in their Production. Below is the data related to material variance calculation. 1. Standard Labor Cost per Hour: RM120 2. Actual Labor Cost per Hour: RM140 3. Standard Hours of Labor Worked: 2000 hours 4. Actual Hours of Labor Worked: 1800 hours Required: i. Labor Rate Variance (4 marks) ii. Labor Efficiency Variance (4 marks) Total Labor Cost Variance (4 marks)