The members carrying zero force (i.e. zero-force members) in the truss shown in the figure, for any lad P > 0 with no appreciable deformation of the truss (i.e. with no appreciable change in angles between the members), are
1
BF and DH only
2
BF, DH and GC only
3
BF, DH, GC, CD and DE only
4
BF, DH, GC, FG and GH only