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單項選擇題

A frustrated customer has called about their computer that is not functioning correctly. Which of the following is the BEST question to ask the user?()

A. “Can you avoid using the PC that crashed?”
B. “What was the last thing that occurred before the PC had problems?”
C. “What were you doing before the PC went down?”
D. “What was the last thing you did before the PC crashed?”

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