Question 4: (25 pts) A warehouse employs picker-to-goods system for picking activities. Assumed that the warehouse needs to handle 3 following orders, namely order 1,2 and 3. a) Explain and illustrate the steps of 3 different picking strategies: discrete order, cluster picking and batch picking b) If each SKU is stored in carton box and each carton box contains 50 units of a SKU, create picking list for pickers in 2 different case of batch picking: pick by line and pick to zero Order SKU Quantity 1 34 3 45 4 22 12 30 Order 2 SKU Quantity 3 17 4 15 7 20 9 17 12 22 22 10 30 8 27 65 35 Order 3 SKU Quantity 1 40 2 41 S 22 7 14 12 15 15 25