If_two_classes_combine_some_private_data_members_and_provides_public_member_functions_to_access_and_manipulate_those_data_members._Where_is_abstraction_used?

• A. Using private access specifier for data members
• B. Using class concept with both data members and member functions
• C. Using public member functions to access and manipulate the data members
• D. Data is not sufficient to decide what is being used