class A { protected int a;

private int c = 2;

public int d;

public void doThis(){ System.out.print(c + );

} protected int get C(){ return c;

} }

class B extends A { private int b;

public void doThis(){

super.doThis(); // line 1

b = 1;

System.out.println(b + );

} } public class Tester { public static void main(String[] args) { A obj = new B(); // line 2

obj.doThis(); // line 3

} }

Which of the following is true with respect to A, B and Tester?

A is a superclass of B and Tester is not a subclass of A

Tester and B are both subclasses of A

B is a subclass of A but A is not a superclass of B

B is a subclass of A and A is a subclass of Tester

N.A.

Which of the following data are accessible in class B?

a, b, d

a, b, c, d

b

a, b

N.A.

The statement marked by comment // line 1 does which of the following?

calls the constructor as defined in the current class

calls the constructor as defined in the parent of the current class

calls the method doThis() defined in class A

N.A.

calls the method doThis() defined in class B

What is true about the line commented as //line 2, in class Tester?

line 2 will compile and during execution the variable obj will refer to an object of type A

N.A.

line 2 will not compile because type of variable obj does not match the type of object

line 2 will compile and during execution the variable obj will refer to an object of type B

line 2 will compile but will throw an exception during execution

What is the output of running line commented as //line 3 in class Tester;

line 3 will not compile

2 1

2

N.A.

1