Help me with A$,$ B$,$ C$,$ and D please

A$)$ Construct the Shear and Moment Diagram for the beam

B$)$ Calculate the maximum compressive bending stress in the beam in problem $1.$ Also state where

this max compressive stress occurs $($top$,$ middle, or bottom of cross section$)$

C$)$ Calculate the maximum shear stress in the beam in problem $1.$ Also state where this max shear

stress occurs $($top$,$ middle, or bottom of cross section$)$

D If the top flange of the cross section is held on by a row of nails in each web, determine how strong

each nail would have to be to resist the max shear flow in the top flange. Use a nail spacing of $6$ inches.