In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?

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In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?

A. howe truss
B. king post truss
C. fink truss(Correct)
D. warren truss