Which of the statements are CORRECT?
(A) Constructors are invoked automatically when objects are created.
(B) Constructors do not have return types, not even void, and therefore cannot return values.
(C) Constructors cannot be inherited, though a derived class can call the base class constructors.
(D) Constructors can be declared as virtual.
Choose the correct answer from the options given below:

1. A(A), (B) and (D) Only
2. B(A), (B) and (C) Only
3. C(B), (C) and (D) Only
4. D(A), (C) and (D) Only

Pick an option to check yourself, or open the answer below.