PLEASE HELP

QUESTION 1 An interface in C++ is a? program that allows easy conversion of another program's data list of argument types in a function's parameter list library for performing input and output class's public members QUESTION 2 of a class. An object is an instance an interface an encapsulation a member function QUESTION 3 How many specifiers are used to derive a class 1 2 3 4 QUESTION 4 DOOO If a class is derived privately from a base class then no members of the base class is inherited all members are accessible by the derived class all the members are inherited by the class but are hidden and cannot be accessible no derivation of the class gives an error