Encapsulation is ?

A. Binding code and data together

B. Using single interface for general class of actions.

C. Reduce Complexity

D. All the above

Explanation :

Encapsulation is a mechanism that puts the data and function together.
It is the result of hiding implementation details of an object from its user.
The object hides its data to de accessed by only those functions which are packed in the class of that object.