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

Answer: A. Alice, Charlie, David
Alice and Bob cannot be selected together, and if David is selected, Charlie must also be selected. Option a satisfies all conditions.