A. Could I have a burger, please? B. Can I have a burger, please? 1. If I were to order in a restaurant and say the example above, what would it mean to the listener if I say A? And what would it mean to the listener if I say B? 2. I understand that "could" is the polite version of "can" but please expain how "could" is more polite than "can". 3. Would you agree that still both sentences sound polite, because of adding "please" at the end of the question? I would very much appreciate your helpful thoughts on this.
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