Consider the following including the Question and the Statements:

There are 5 members P, Q, R, S, T in a family.

Question: What is the relation of T to Q?

Statement-1: P and Q are a married couple.

Statement-2: R is the father of S.

Statement-3: T is R's son.

Statement-4: P and S are sisters.

Which one of the following is correct in respect of the above Question and Statements?