The beam shown below has a distributed load $(P=7\frac{N}{m})$ acting on a portion of it$.$ A concentrated force $F=11N$ is applied to point $C($ where $c=3,d=4,e=5).$ Point $D$ is just to the left of roller support $B$ which has a clockwise couple moment of $M=7Nm$ applied on it $($i$.$e$.$ couple moment is acting at $B).$ If a $=8m,b=4\mathrm{.}0m,$ determine the internal normal force, shear force, and moment at points D and E $.$ Note that the support at point A is a pin.