URGENT! Identify what consists a conflict set in production systems Select one: All production rules in the knowledge ba

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URGENT!
Identify what consists a conflict set in production systems
Select one:
All production rules in the knowledge base of a production
system
Production rules that have higher priority in the knowledge
base
Only those production rules which match a pattern located in the
working memory
All rules which were already fired during system's operation
Production rules that provide higher probability to find a
problem solution