Please select all the correct statements. The default copy constructor for a derived class in C$++$ performs a deep copy of dynamically allocated resources. When defining a copy constructor in a derived class, it is necessary to consider the copy behavior of the base class. The copy constructor of a derived class in C$++$ should always call the copy constructor of its base class explicitly. Every constructor of a derived class must explicitly call a constructor of its base class. Destructors in an inheritance hierarchy require manual intervention to ensure proper functioning.