Single Source Monkoffee is further considering to source coffee beans only from Indonesia for both medium and dark roast coffees - Use same coffee beans from Indonesia but separately roast for medium roast and dark roast Fixed order cost is $200 Inventory replenishment lead time is 4 weeks from Indonesia H: Operation Weekly demands (independent) (D and op) - Medium roast coffee (P1): 100 bags per week with standard deviation of 40 bags per week - Dark roast coffee (P2):25 bags per week with standard deviation of 10 bags per week Inventory holding (H) - $40 per bag per year (10% of product cost/price) Monkoffee uses continuous review policy - Lot size (Q) to replenish coffee beans from Indonesia is calculated using economic order quantity (EOQ) Cycle service level (CSL) - 0.99 Inventory-replenishment lead time (L and s.) 4 weeks Fixed order cost (5) - $200 per order Question 4 (4-1) Calculate a total of annual ordering cost and annual holding cost for the above three cases - Current (Question 1) Two suppliers delivering independently - Joint ordering (Question 2) Two suppliers delivering jointly - Single source (Question 3) Single supplier (4-2) Based on the above calculations, what should Monkoffee do (current, joint ordering, or single source)? Please I need help with solving question 4