Again I agree with you as stated above, it seems like you disagree, that I agreed with you above.
Again, I am NOT disagreeing with Mrig =< Mrighting, as Jake drew above.

Simply, as drawn the FBD appears to show the location of tension members with Fy(b) and Fy(c) are on opposite sides of the C.B.
Can you edit the FBD of the tension member(s) whose vertical component(s) are on the same side of the C.B.? (not sys diag as Jake drew)