A committee of four members is to be formed from the following individuals: P, Q, R, S, and T. The selection criteria are: 1) P and Q cannot be on the committee together. 2) R must be included if S is included. 3) T can only be included if P is not included. Which of the following combinations is valid?

B. Q, R, S, T

In a race, five participants - P, Q, R, S, and T - finished in the following order: P finished before Q but after R. S finished before T. Which of the following statements is true?

D. R FINISHED FIRST

In a class of six students: P, Q, R, S, T, and U, the selection criteria are: 1) Only students who have completed their assignments can be selected. 2) P, Q, and R have completed their assignments, while S, T, and U have not. Who can be selected based on these conditions?

A. P, Q, AND R

In a group of five books: Book A is thicker than Book B but thinner than Book C. Book D is thicker than Book A but thinner than Book E. Which book is the thinnest?

B. B

In a group of five friends: A, B, C, D, and E, the following conditions are given: A is taller than B but shorter than C. D is shorter than E but taller than A. Who is the tallest among them?

C. C