In a group of five friends: Alice, Bob, Charlie, David, and Eva, the following conditions are given: 1) Alice cannot sit next to Bob. 2) Charlie must sit next to David. 3) Eva cannot sit at either end. Which of the following arrangements satisfies all conditions?
From the following items: 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 be selected only if P is not selected. Which of the following selections is valid?