There is family of 6 members P, Q, R, S, T and U in which two are married couples. S is the grandfather of P and father of T. Q is the wife of T and mother of R. P is the grand daughter of  S. What is the relation between U & T ?

U is the father of T U is the mother of T U is the mother-in-law of T There is no relation between U & T

U is the mother of T