The correct stability order of te following resonance structures is $I:H_2C= N^+=\bar{N} ; \quad II:H_2C^+ - N=\bar{N} \quad ; III:H_2C - N^+=\bar{N} \quad ; IV:H_2 \bar{C}- N=N^+$

Question

$(a)\;I > II > IV >III \\ (b)\;I > III > II >IV \\ (c)\;II > I > III >IV \\ (d)\;III > I > IV >II$