Consider the following classes and object obj. class Base {
private:
int x;
protected:
int y;
public:
int z;
Base();
};
class Derived : public Base {
public:
Derived();
};
Derived obj;

a. z only
b. y and z
c. x, y, and z

1. An implementation of constructor Base() can have access to member variables

2. An implementation of constructor Derived() can have access to member variables

3. Object obj can directly access