A committee of four members is to be formed from the following candidates: P, Q, R, S, and T. The selection criteria are: 1) P cannot be selected with Q. 2) R must be included if S is included. 3) T can only be selected if R is also selected. Which of the following combinations meets the criteria?
From the following items: A, B, C, D, and E, the selection rules are: 1) A and B cannot be selected together. 2) C must be selected if D is selected. 3) E can be selected only if A is not selected. Which selection is valid?