P, Q, R, S, T and U including three boys and three girls are top six rank holders of a class; from top rank 1 to bottom rank 6. P is just after T. Only two persons are behind U in which one is a boy and one is a girl. Rank 4 holder is a boy. R is just ahead of U. The person who got the rank 6 is a boy. S is a girl. T is a boy. Which combination of person-rank-gender is NOT correct?
1
T : Rank 1 : Boy
2
R : Rank 2 : Girl
3
Q : Rank 6 : Boy
4
S : Rank 5 : Girl