A is stand for artificial inteligence. it can do verious small task with 100 % accuracy.
B stand for business inteligence . it can make verious business decission like what will be next week sell condation or next month sell condation or how much imployee need for next 6 month.
C stand for cryptographic intelligence. it can make is own criptic currection . base on its inteligence it can bring more value.
D stand for decentralize inteligence. it can distribute inteligence in a way so balance can put on this inteligence.