题目内容
（请给出正确答案）
[主观题]
Which of the following is NOT true according to the author？（）[A] Tipping is a c
Which of the following is NOT true according to the author？（）
[A] Tipping is a common practice in the restaurant world.
[B] Waiters don't care about tipping.
[C]Customers generally believe in tipping.
[D]Tipping has little connection with the quality of service.
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