In a group of five friends: Alice, Bob, Charlie, David, and Eva, Alice is taller than Bob but shorter than Charlie. David is shorter than Eva but taller than Bob. Who is the tallest among them?

C. CHARLIE

There are four animals: a dog, a cat, a bird, and a fish. The dog is a mammal, the cat is a mammal, the bird is not a mammal, and the fish is not a mammal. Which animal is not a mammal?

C. BIRD

A, B, C, D, and E are five different colors: Red, Blue, Green, Yellow, and Black. If Red is not Blue, Blue is not Green, and Green is not Yellow, which color is not mentioned as being different from any other?

D. BLACK

In a class, there are three types of students: science students, arts students, and commerce students. If Sarah and John are science students, Emily is an arts student, and Mike is a commerce student, which of the following groups contains only students from the same category?

A. SARAH, JOHN, EMILY

In a group of five friends: Alice, Bob, Charlie, David, and Eva, Alice is taller than Bob but shorter than Charlie. David is shorter than Eva but taller than Bob. Who is the tallest among them?

C. CHARLIE