Please take a look at this supply chain question on making an inventory decision. Can you help me with Q$1$ and Q$2?$ Q$1$ is a decision tree. Q$2$ I don't understand. Here is the problem: A retailer needs to choose the inventory level for the coming season. The retailer estimates the demand will have a $40\%$ chance to be $60,40\%$ chance to be $40,$ and $20\%$ chance to be $20.$ The ordering cost is $$5$ for each unit. The retail price is $$20.$ For each unit of surplus inventory, the salvage value is $$2.$ The penalty cost for each unit of unmet demand is $$3.$ There are only two feasible ordering strategy: $50$ or $45.$ Q$1.$ Use decision true to analyze which ordering strategy is more beneficial to the retailer. Q$2.$ Prove that ANY quantity $20$