On the x - axis and at a distance x from the origin, the gravitational field due to a mass distribution is given by `(Ax)/((x^2+a^2)^(3//2))` in the x - direction. The magnitude of gravitational potential on the x - axis at a distance x, taking its value to be zero at infinity , is :

Options

A. `A/((x^2+a^2)^(1//2))`
B. `A(x^2+a^2)^(3//2)`
C. `A/((x^2+a^2)^(3//2))`
D. `A(x^2+a^2)^(1//2)`