There are four people: P, Q, R, and S. P is older than Q but younger than R. S is younger than Q. Who is the youngest among them?

D. S

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

In a class, there are three types of students: A, B, and C. Type A students are good at mathematics, Type B students are good at science, and Type C students are good at literature. If a student is good at science, which type do they belong to?

B. TYPE B

In a family, there are three siblings: Tom, Jerry, and Anna. Tom is older than Jerry but younger than Anna. If Anna is 10 years old, how old is Jerry at most?

B. 9

A, B, C, D, and E are five different fruits. A is sweeter than B but less sweet than C. D is sweeter than E but less sweet than A. Which fruit is the least sweet?

B. B