medium · LSAT Logical Reasoning

Which one of the following situations conforms to the principle above?

1. A shopper who kept the original sales receipt but threw away the product's box is refused a full refund.
2. A customer is given a partial refund for returning the item in its packaging but with only a photocopy of the receipt.
3. A store grants a full refund to a long-time customer who lost the receipt but returned the item unopened.
4. A customer who presents both the original receipt and the original packaging is legally guaranteed a cash refund.
5. A customer with the original packaging and receipt is denied any refund because the store has changed its policy.

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