Four friends, A, B, C, and D, are sitting in a row. A is to the left of B but to the right of C. D is not at either end. Who is sitting in the middle?

A. A

In a family of six members A, B, C, D, E, and F, there are two married couples. A is a teacher, B is a doctor, and C is a lawyer. D is the mother of E and F. Who is the father?

B. B

Five students, A, B, C, D, and E, scored different marks in an exam. A scored more than B but less than C. D scored less than E but more than A. Who scored the highest marks?

C. C

Four friends, A, B, C, and D, have different pets: a dog, a cat, a bird, and a fish. A does not have a dog or a cat. B has a bird. C has a pet that is not a fish. What pet does D have?

C. FISH

Four friends, A, B, C, and D, are sitting in a row. A is to the left of B but to the right of C. D is not at either end. Who is sitting in the middle?

A. A