1.

Which of the following are essential features of object-oriented programming languages?  Abstraction and encapsulation Strictly-typedness Type-safe property coupled with sub-type rule Polymorphism in the presence of inheritance

A. 1 and 2 only
B. 1 and 4 only
C. 1,2 and 4 only
D. 1,3 and 4 only
Answer» C. 1,2 and 4 only


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