Select the appropriate function for the Bending moment $M(x)$ in the segment

$xBM(x)=-2\mathrm{.}67x^2-10xM(x)=2\mathrm{.}67x^3+10xM(x)=-4x^2-10M(x)=-0\mathrm{.}444x^3-10x0.$ Note that the variable $xis$ measured from point $Bto$ the left.

Circle your answer. $To$ get full points you need $to$ justify your answer, please

include the $FBD$ you need $to$ use $to$ find the answer.

$a$