A, B, C, D, and E are seated in a row. A is to the left of C, and D is to the right of B. If E is sitting at one of the ends, who is sitting in the middle?
Four friends - A, B, C, and D - have different pets: a dog, a cat, a bird, and a fish. A does not own a cat. B owns a bird. C does not own a dog. What pet does D own?