Read the following information carefully and answer the question given below. 

During a party, a game is being played. For the game, 9 people from P to X (mix of boys and girls) have to stand in a vertical row. Boys are wearing blue helmets and girls are wearing green helmets. The row starts at top and with a green helmet. Boys and girls stand alternately in the row. Each position in the row can be occupied by one person only. 

i) P stands seven places before Q.
ii) Third green helmet is R.
iii) Second boy after R is S.
iv) Fourth place in the row is occupied by T.
v) U stands ahead of P.
vi) V stands between R and P.
vii) X is a girl.

Who among the following stands after X?