The beam below is loaded with a uniform load $"w"$ of $100($pounds per lineal foot$)$ and a concentrated load $"$P$"$ of $1500($pounds$),$ and an externally applied moment $"$M$"=30000($pound$-$feet$).$

The internal moment $($pounds$-$feet$)$ at the right end of the beam is:

$-10000$

$0$

$-20000$

$-30000$