Sam likes eating fish very much. He often buys fish in the shop and takes them home. One day his wife sees the fish and thinks, "Good! Now, I can ask my friends to have lunch and we can eat the fish. They like fish very much." When Sam comes home from work in the evening, the fish is not there and his wife says, "Oh, your cat eats it." And then she gives him some bread for his supper. Sam is angry. He thinks his wife _ . He takes the cat and his wife to a shop near his house and weighs  the cat. Then he turns to his wife and says, "My fish weighs one kilo. The cat weighs one kilo, too. My cat is here, you see, then, where is my fish?" Who gets very angry?
Sam's wife. Sam's friends. Sam's wife's friends. Sam.