The differential equation of all circles whose radius is 5 centre is any point (h,k) is
A. `25((d^2y)/(dx^2))+(1+((dy)/(dx))^2)^2 =0`
B. `25((d^2y)/(dx^2))-(1+((dy)/(dx))^2)^2 =0`
C. `25((d^2y)/(dx^2))+(1+((dy)/(dx))^2)^3 =0`
D. `25((d^2y)/(dx^2))-(1+((dy)/(dx))^2)^3 =0`