Abam Sdn Bhd (ASB) produces Cewee Hand Sanitizer and uses process costing system. Cewee Hand Sanitizer passes through two processing departments: Mixing and Bottling. Liquid materials are blended in the Mixing Department and the resulting product is sent to Bottling Department, where its filled into 100 gram-plastic bottle. ASB uses the FirstIn, First-Out (FIFO) method in its process costing system. The information relates to the Mixing Department for the month of February 2020 is as follows: Beginning inventory of Work in Process Physical unit 6,000 units Percentage of Completion: Conversion Costs 60% Total units to account for: 22,000 units Ending inventory of Work in Process: Physical unit 4,000 units Percentage of Completion: Conversion Costs 40% REQUIRED: (a) Calculates the equivalent units (Direct materials and Conversion costs) if the Direct materials are added at the beginning of the process. (3 Marks) (b) Calculates the equivalent units (Direct materials ONLY) based on the following assumptions: (i) Direct materials are added uniformly throughout the process. (1 Mark) (ii) Direct materials are added after 50 percent completed. (1 Mark) (iii) Direct materials are added after 30 percent completed. (1 Mark) (c) In the era of Industrial Revolution 4.0 (IR4.0), ASB plans to adopt Just-In-Time (JIT) system. Explain FOUR (4) points how the adoption of a JIT system to manufacturing affects process costing. (4 Marks)