Inheritance Question 7 (a) Multiple inheritance is a case where one class is derived from two or more classes. For example, the following declaration shows that square is derived from both shape and polygon. class square public shape, polygon What are the advantages of multiple inheritance? What are the negative points and potential problems of multiple inheritance? 13 marks] (b) Given the G++ declaration: class A public:int x protected: int y; Which of the following would be rejected by the compiler? Explain you an- swer briefly 1) class B: public A void fo (x y; ) 2) class B void f() { A a; a.x.. a,y; } 3) class B: public A class C: public B void f() { x-y; } 4) Both variants 2 and 3. 5) None of the above [3 marks]