7. If you have composition in your design, then the suitable pattern is: (2 Points) O Structural patterns O Creational patterns O Behavioral patterns O None of them 8. VM is a Virtual Machine with physical a abstraction. (2 points) O True O Flase 9. When a superclass is not visible to its subclasses it is better to reuse black-box (2 points) O True False 10. Suppose you want to develop an Aircraft_Maintenance System, and each type of aircraft has many parts, in your opinion, what design pattern can be used in this case ? (2 points) O Adapter pattern Builder O Facade pattern O Straregy pattern O Command Singleton Pattern