Consider the following statements:
If at section away from the ends of the beam, M represents the bending moment, $$V$$ the shear force, $$w$$ the intensity of loading and $$y$$ represents the deflection of the beam at the section, then
1.$$\frac{dM}{dx} = V$$
2.$$\frac{dV}{dx} = w$$
3.$$\frac{dw}{dx} = y$$
Of these statements

A

1 and 2 are correct

B

1 and 3 are correct

C

2 and 3 are correct

D

1, 2 and 3 are correct