Can you show all the work please

Problem $1(35$ points$)$

The free$-$body diagram of a shaft ABCD that is subjected to combined bending and torsion is shown in the figure below. The diameter of the shaft is $1\mathrm{.}5$ in $.$

a$)$ Draw the shear force and bending moment diagrams in $yz$ and $yx$ planes and the torque diagram.

b$)$ Determine the location of the critical cross$-$section in the shaft. On the critical cross$-$section, indicate the bending moments, the resultant bending moment, and the points of maximum tensile and compressive bending stress. Label your drawing clearly with the appropriate coordinate axes.

c$)$ If the shaft is made of a ductile material, what should be its yield strength if a safety factor of $2$ is required based on the von Mises criterion.