I'll give you a question, please answer with step-by-step reasoning process.
Which of the following sentences is nonsensical?\nOptions:\n- Sentence A: "He was fired by his boss for laziness"\n- Sentence B: "He was fired by his boss for his diligence"\n

Sentence B
Hard-working people will be very serious in their work and will not be fired.

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Final answer: Sentence B