$[22$ points$]$ The truss shown is supported by a pin at A and a rocker at G$.$ There are loads applied to the pins at F and D$.$

a$)$ Locate all zero$-$force members $($ZFMs$)$ in the truss and write these in the answer blank provided.

b$)$ Determine the force in members $AB,GB,$ and GF and state whether they are in tension $(T)$ or compression $($C$).$ FBD$($s$)$ are required for full credit.

c$)$ Determine the internal axial force, shear force, and bending moment at the halfway point of member DE$.$