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

During a party, a game is begin 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 before Q leaving 7 places. 

ii) Third green helmet is R.

iii) Second boy after R is S.

iv) Fourth place is occupied by T.

v) P stands ahead of U.

vi) V stands between R and P.

vii) X is a girl.

Who among the following stands after X?