Assertion (A): All mammals are warm-blooded. Reason (R): Warm-blooded animals can regulate their body temperature internally. Which of the following is correct?
In a family, there are five members: P, Q, R, S, and T. P is the father of Q, R is the mother of Q, S is the sister of Q, and T is the brother of S. What is the correct order of the family members from oldest to youngest?