Question $1$

When we have code of the form:

class A extends B $\{$

$\}$

o A and B are subclasses of each other.

o A is a subclass of B$.$

o A and B are unrelated.

o A and B are superclasses of each other.

o B is a subclass of A$.$

Question $2$

Inheritance is $\_\_\_\_\_\_.($Choose the best answer.$)$

o the same as composition

o an $$is$-$a$$ relationship between two classes

o a relationship between two data members in a single class

o a $$has$-$a$$ relationship between two classes

o the same as aggregation

Question $3$

When we have code of the form:

class A extends B $\{$

$\}$

o A constructor in the B class can call any constructor in A by using the super keyword.

o A constructor in the A class can call any constructor in B but only by using the super keyword.

o Neither A nor B can have constructors.

o A constructor in the B class can call the default constructor in A by using the statement: B$()$;

o A constructor in the A class can call the default constructor in B by using the statement: B$()$;

Question $4$

From a subclass, we can access $\_\_\_\_\_\_.($Choose the best answer.$)$

o Public and protected data members and methods of the superclass

o Any non$-$static data member of a superclass

o Any data member of the superclass

o Any static data member of a superclass

o Private data members and methods of the superclass

Question $5$

When we have code of the form:

class A extends B $\{$

$\}$

And we want class A to override a method named compute, $\_\_\_\_\_\_.$

o we cannot have any methods in class A

o we cannot have any methods in class B

o we will have to add a method in class B named compute but we cannot have method named compute $()$ in class A

o we have to add methods named compute in class B with different numbers of parameters

o we will have to add a method in class A named compute with the same number of parameters as the one in B