With the usual notation \(\dfrac{d^2x}{dy^2}\) is

• A. \(\left(\dfrac{d^2y^{-1}}{dx^2}\right)\)
• B. \(\dfrac{d^2y}{dx^2}\left(\dfrac{dy}{dx}\right)^2\)
• C. \(-\left(\dfrac{d^2y}{dx^2}\right)^{-1}\left(\dfrac{dy}{dx}\right)^{-3}\)
• D. \(-\left(\dfrac{d^2y}{dx^2}\right)\left(\dfrac{dy}{dx}\right)^{-3}\)