Which of the following statements is/are definitely correct?
I. I is sister-in-law of U
II. R is daughter of A
III. S is married to M

Answer the questions based on the information given below. Nine persons (S, I, H, W, V, R, A, M, and
U) belong to a family of three generations. There are three married couples in the family. No single person in the family is a parent. There are four male members in the family. There are only two members in 3rd generation. S is married to mother of R. H, who belongs to 1st generation, is mother-in-law of U. U is father of W. A and M are sisters. V has three daughters. I and R are unmarried females. A is not married to father of W. R belongs to 3rd generation.