A . a base class is an abstraction of all its derived classes
b. a derived class is an abstraction of all its base classes
d. Base & derived classes are abstractions for each other
e. Inheritance prevents abstraction
f. No relationship between them
which of the given options refers to data encapsulation in oops ?
1 .the data and operation for an object are defind and fixed.
2.data of an object is encapsulated in its class
3. data is hidden for an object
4. a class can have multiple objects