A plane truss is shown in the figure (not drawn to scale)

Q. A plane truss is shown in the figure (not drawn to scale).

Which one of the options contains ONLY zero force members in the truss?

(A) FG, FI, HI, RS                                        (B) FG, FH, HI, RS

(C) FI, HI, PR, RS                                         (D) FI, FG, RS, PR

Ans: FI, FG, RS, PR