Which of the following shows the correct relation between shear force $$(V_x)$$, bending moment $$(M_x)$$ and load $$(W)$$ ?

A

$$\frac{d^{2}V_X}{dx^{2}}=-W$$

B

$$\frac{dV_x}{dx}=-W$$

C

$$\frac{dM_x}{dx}=V_x$$

D

Both $$\frac{dV_x}{dx}=-W$$ and $$\frac{dM_x}{dx}=V_x$$