He was tired this morning. He stayed up late to watch a football match last night.
A. He wouldn’t be tired this morning if he had stayed up late to watch a football match last night.
B. He wouldn’t have been tired this morning if he had not stayed up late to watch a football match last night.
C. If he didn’t stay up late to watch a football match last night,he wouldn’t be tired this morning
D. He would have been tired this morning if he had stayed up late to watch a football match last night.

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