Polymorphism and inheritance are two of the main reasons to use OOP. As R is primarily a functional programming language,
what functions does the S3 OOP system implement polymorphism and inheritance?
A. it implements polymorphism through NextMethod( ) and inheritance through UseMethod( )
B. it implements polymorphism through UseMethod( ) and inheritance through NextMethod( )
C. it implements polymorphism and inheritance through NextMethod( )