enigma:puzzle try to solve this one

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sunday morning a husband had found murdered on the floor and when his wife saw the dead body,,, she immediately called the police. as the police arrived they had found thia alibis: .the wife saide she was sleeping .the gardener is in the garden .the maid is in the post office .the cook is still cooking their breakfst in the kitchen .the driver was on his way to the market .the other is in charge of the laundry after that the police hurriedly took the suspect and the murder case has been solve... WHO do you think is the murderer and why?