In a family of six members: P, Q, R, S, T, and U, P is the father of Q. R is the mother of Q. S is the brother of Q. T is the sister of R. U is the grandfather of Q. Who is the grandmother of Q?

C. T

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?

C. CHARLIE, DAVID

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 and Q cannot be on the committee together. 2) R must be included if S is included. 3) T can be included only if P is included. Which of the following combinations is valid?

C. R, S, T

A team of three players is to be selected from: X, Y, Z, A, and B. The selection rules are: 1) X and Y cannot be selected together. 2) Z must be included if A is included. 3) B can only be included if Y is included. Which of the following teams is valid?

A. X, Z, B

A selection of fruits consists of apples, bananas, cherries, and dates. The selection criteria are: 1) Apples cannot be selected if bananas are selected. 2) Cherries must be included if dates are included. Which of the following selections is valid?

B. CHERRIES, DATES