If p is the length of the perpendicular from the origin on the line whose intercepts on the axes are a and b, then

Options

A. `p^2=a^2-b^2`
B. `p^2=a^2+b^2`
C. `1/p^2=1/a^2+1/b^2`
D. `1/p^2=1/a^2-1/b^2`

Answer

C