Locus of a point which moves such that its distance from the X-axis is twice its distance from the line x-y=0 is

Options

A. `x^2+4xy-y^2=0`
B. `2x^2-4xy+y^2=0`
C. `x^2-4xy+y^2=0`
D. `x^2-4xy-y^2=0`

Answer

B