1 goc Explain plz please ans my following questions as soon as possible

option A is correct . Carbocation on the 5 membered ring will be unstable. Now carbon is less EN so it easily possess +ve charge than nitrogen

option A In case of (a) II have positive charge on ring carbon and due to strain carbocation at ring carbon is less stable so I>II in cae of (b), III have positive charge on less e...