Choose the correct answer from the given four options. The tangent of angle between the lines whose intercepts on the axes are a, – b and b, – a, respectively, is

Question

$\begin {array} {1 1} (A)\;\large\frac{a^2-b^2}{ab} & \quad (B)\;\large\frac{b^2-a^2}{2} \\ (C)\;\large\frac{b^2-a^2}{2ab} & \quad (D)\;\text{None of these} \end {array}$