Please explain and draw FBD where needed. Problem a$),$ b$)$ and c$)$:

Use the method of joints, the method of sections, or both to solve the following trusses. Draw F$.$B$.$D$.$s for all your calculations.

$1)$ Calculate the reactions at the supports;

$2)$ Identify all the zero force members in the trusses;

$3)$ Find the internal forces for all truss members in a$)$ and b$),$ and marked member in c$)$;

$4)$ Indicate your final results on the truss system.