A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got the following alibis:The wife said she was sleeping.The cook said he was cooking breakfast.The gardener said he was planting seeds.The maid said she was getting the mail.The butler said he was polishing the silverware.The police immediately arrested the murderer. Who was it and how did they know?Explanation:If the murder happened on Sunday morning, the wife's claim that she was sleeping is suspicious because typically, couples sleep together at night. If it was morning when the murder occurred, the wife should have been awake, not sleeping. Therefore, her alibi doesn't hold up, and she likely lied about her whereabouts.