The Orthogonal DE for family of parabola y2=4a(x+a) is same as _______(where DE stands for Differential equation)

The Orthogonal DE for family of parabola y2=4a(x+a) is same as _______

1.	The Orthogonal DE for family of parabola y²=4a(x+a) is same as _______(where DE stands for Differential equation)
A.	DE of parabola y<sup>2</sup>=4a(x+a)
B.	DE of parabola y<sup>2</sup>=4ax
C.	DE of parabola x<sup>2</sup>=4ay
D.	DE of parabola x<sup>2</sup>=4a(y+a)
Answer» B. DE of parabola y<sup>2</sup>=4ax