A team of four members is to be formed from the following candidates: P, Q, R, S, and T. The selection criteria are: 1) P and Q cannot be selected together. 2) R must be included if S is selected. 3) T can be included only if P is not included. Which of the following selections is valid?
From the following items: 1) Red, 2) Blue, 3) Green, 4) Yellow, the selection criteria are: 1) Red and Blue cannot be selected together. 2) Green must be selected if Yellow is selected. Which of the following combinations is valid?