In the class diagram of the observer design pattern, we have two dependencies. Subject interface depend on observer inteface. Concrete observer(s) depend on the concrete subject. Explain, with an example, the meaning of why one dependency is at the supertypes level but the other one is at the level of the concrete objects? observers > Subject > Observer subject Concrete Subject Concrete Observer Maximum number of characters including HTML tags added by text editor): 32,000 In the class diagram of the observer design pattern, we have two dependencies. Subject interface depend on observer inteface. Concrete observer(s) depend on the concrete subject. Explain, with an example, the meaning of why one dependency is at the supertypes level but the other one is at the level of the concrete objects? observers > Subject > Observer subject Concrete Subject Concrete Observer Maximum number of characters including HTML tags added by text editor): 32,000