__________, which means if A declares B as its friend it does NOT mean that A can access private
data of B. It only means that B can access all data of A.
If there is a pointer p to objects of a base class, and it contains the address of an object of a derived
class, and both classes contain a nonvirtual member function, ding(), then the statement p->ding(); will
cause the version of ding() in the _____ class to be executed.