Question: Consider the following problem description: Users place coins in a vending machine and select a product by pushing a button. If the inserted coins are

Consider the following problem description:
Users place coins in a vending machine and select a product by pushing a button. If the inserted coins are sufficient to cover the purchase price of the product, the product is dispensed and change is given. Otherwise, the inserted coins are returned to the user. What classes should you use to implement a solution?

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