11. In blackboard architecture style all agents cannot work together in a separate manner. (2 Points) O True O False 12. If classes need to communicate with each other during run-time, then the suitable pattern is structural pattern (2 Points) O Flase O True 13. When the object can be seen in different way this can be considered a (2 points) O Inheritance O Polymorphism O Encapsulation O None of the above 14. When an operation allow other clients to access a unique instance, This can be done using: (2 Points) O Command O Builder Adapter pattern O Strategy pattern O Facade pattern Singleton Pattern