What is the meaning of the idiom "to burn the midnight oil"?

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A To waste resources unnecessarily
B To work or study late into the night
C To cause an accidental fire
D To wake up early in the morning

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Answer: B. To work or study late into the night

Answer: B) To work or study late into the night
Explanation: This phrase references using oil lamps to study long after normal sleeping hours

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What is the meaning of the idiom "to burn the midnight oil"?

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