How is R related to S?

Which among the following option(s) is/are definitely true?

Answer the questions based on the information given below.

Who is the daughter of A?

How is S related to N?

How G is related to C?

Who among the following person is the niece of D?

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

How is E related to D’s mother?

How is M related to N?