PLEASE HELP The coordinates of the vertices of a quadrilateral are P (1,2), R(1,4), S(3,4),

Quadrilateral PRST is reflected across the y-axis to create quadrilateral P’R’S’T’. Which rule describes the transformation?
A) (X, Y) --> (X,-Y)
B) (X, Y) --> (-X, Y)
C) (X, Y) --> (Y,-X)
D) (X, Y) --> (-Y, X)
which one?? please help!!!