Five animals - a dog, a cat, a rabbit, a parrot, and a fish - are kept in a pet store. The dog is not the smallest, the cat is smaller than the rabbit, and the fish is the smallest. Which animal is the largest?

A. DOG

A, B, C, D, and E are five students. A is older than B but younger than C. D is younger than E. If C is older than E, who is the youngest?

C. D

There are four types of pets: Dogs, Cats, Birds, and Fish. If all Dogs are friendly, and some Cats are not friendly, which of the following is true?

D. SOME PETS ARE NOT FRIENDLY

Among four siblings: Tom, Jerry, Anna, and Lucy, Tom is older than Jerry but younger than Anna. Lucy is the youngest. Who is the oldest sibling?

C. ANNA

In a family, there are three children: X, Y, and Z. X is older than Y but younger than Z. If Z is not the oldest, who is the youngest?

B. Y