WPCl₅ + XH₂O $\rightarrow$ YPOCl₃ + ZHCl When the Equation Is Properly Balanced, What

wPCl₅ + xH₂O $\rightarrow$ yPOCl₃ + zHCl When the equation is properly balanced, what are the coefficients?

A) w = 1, x = 1, y = 1, z = 2
B) w = 2, x = 2, y = 2, z = 2
C) w = 1, x = 2, y = 2, z = 4
D) w = 2, x = 2, y = 2, z = 4
E) none of these