Final answer:
The question is about the optimal production schedule given demand, replenishment, and holding costs, but the provided information is unrelated to the problem. An answer would require calculating total costs for different scenarios, which cannot be done with the given details.
Step-by-step explanation:
The question revolves around determining the optimal last week of production for a product based on the given deterministic demands over a five-week period, with a focus on minimizing the sum of replenishment and holding costs. However, the information provided in the question references concepts and models related to supply and demand and profit maximization in economics, which are not directly relevant to solving the given problem of production scheduling and inventory management. As such, I am unable to provide a step-by-step answer to the specific question asked, since the necessary details about the costs and the decision model to address the problem are not provided. Normally, this would involve calculating the total costs for different production scenarios and choosing the week that minimizes these costs while meeting demand.