Determine an expression for the shear force as a function of $x.$ That is$,$ find $V(x).$

a$.V(x)=-2x^2+50(kN)$

b$.V(x)=-6x^2+44(kN)$

c$.V(x)=-4x^2+48(kN)$

d$.V(x)=-4x^2+52(kN)$

The left support is a pin and the right support is a roller.

Determine an expression for the bending moment as a function of x $.$ That is$,$ find $M(x).$

a$.M(x)=-\frac{4}{3}{x}^3+48x(kN*m)$

b$.V(x)=-\frac{8}{3}{x}^3+36x(kN*m)$

c$.V(x)=-\frac{4}{3}{x}^2+52x(kN*m)$

d$.V(x)=-\frac{8}{3}{x}^2+44(kN*m)$

The left support is a pin and the right support is a roller.