6. let g be a group satisfying the property that f:gz is a homomorphism implies f(g) = 0,vg e g. then a possible group g is (a) (b) (c) (d) 19 [2018: 2 marknl

6. Let G be a group satisfying the property that f:GZ is a homomorphism implies f(g) = 0,Vg e G. Then a possible group G is (a) (b) (c) (d) 19 [2018: 2 Marknl