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

A, B, C, D, and E are five students who scored the following marks: A scored more than B but less than C. D scored less than E but more than A. Who scored the least?

B. B

In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions apply: 1) Alice cannot be selected if Bob is selected. 2) Charlie must be selected if Eva is selected. 3) David can only be selected if Alice is not selected. Which of the following groups can be selected?

C. CHARLIE, DAVID, EVA

You have five candidates: P, Q, R, S, and T. The selection rules are: 1) P cannot be selected if Q is selected. 2) R must be selected if S is selected. 3) T can only be selected if P is not selected. Which of the following selections is permissible?

B. Q, R, S, T

In a selection of three items from the following: A, B, C, D, and E, the conditions are: 1) A cannot be selected if B is selected. 2) C must be included if D is included. 3) E can only be included if A is not included. Which of the following groups is valid?

D. C, D, E