[A] Collective liability is the core-essence whether it was culminated suddenly or not.
[B] Mere non-participation in dacoity will not exempt from criminal liability since there was pre-concert.
[C] Planning was to commit only dacoity, but another person, for earlier enemity, abetted to commit murder while there was no common object.
[D] There must be one or more participants for the constructive action by each member.