QSuppose A is an abstract class, B is a concrete subclass of A, and both A and B have a default constructor. Which of the following is correct?

1. A a = new A();
2. A a = new B();
3. B b = new A();
4. B b = new B();

Choose the Best Option

Click any option to instantly check if you're correct.

• A 1 and 2 ✔ ✖
• B 2 and 4 ✔ ✖
• C 3 and 4 ✔ ✖
• D 1 and 3 ✔ ✖

Share This Question

Challenge a friend or share with your study group.

Related MCQ Questions