$$\dfrac{d^2 x}{dy^2}$$ equals:

A

$$-\left(\dfrac{d^2 y}{dx^2}\right)^{-1} \left(\dfrac{dy}{dx}\right)^{-3}$$

B

$$\left(\dfrac{d^2 y}{dx^2}\right) \left(\dfrac{dy}{dx}\right)^{-2}$$

C

$$-\left(\dfrac{d^2 y}{dx^2}\right) \left(\dfrac{dy}{dx}\right)^{-3}$$

D

$$\left(\dfrac{d^2 y}{dx^2}\right)^{-1}$$