Question 12 Chief Inspector Meitantei Konan investigates a murder, in which, he found the ff. facts: i. Mr. Kojima, the murdered man, was killed by a blow on the head with a brass candlestick. ii. Either Mrs. Kojima (wife) or a maid, Marta, was in the dining room at the time of the murder. ii. If the cook was in the kitchen at the time of the murder, then the butler killed Mr. Kojima with a fatal dose of tetrodotoxin. iv. If Mrs. Kojima (wife) was in the dining room at the time of the murder, then the driver killed Mr. Kojima. v. If the cook was not in the kitchen at the time of the murder, then Marta was not in the dining room when the murder was committed. vi. If Marta was in the dining room at the time the murder was committed, then the wine steward killed Mr. Kojima. Assume there was only one cause of death, who killed Mr. Kojima?

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