In a family of six persons, two are males and remaining are females. The members are P, Q, R, S, T and U. There are two pairs of father and daughter in the family. S is wife of Q. R and Q are siblings. P is wife of T. U is NOT daughter of S. Below are given a few statements. Based on the given information, select which of the statements is/are definitely true. 1. The two male members of family are Q and T. 2. S is mother of P. 3. T is also a sibling of Q. 4. T is uncle of Q.