Among the following compounds, the one which does not show geometrical isomerism is s
A. `C_(6)H_(56)N=NC_(6)H_(5)`
B. `C_(6)H_(5)CH=CHC_(6)H_(5)`
C. `C_(6)H_(5)-underset(NH_(3))underset(|)( C)=N-OH`
D. `C_(6)H_(5)-underset(C_(6)H_(5))underset(|)( C)=N-CH_(3)`