Read the following statements w.r.t. natural system of classification : 

(i) It was given by George Bentham and Joseph Dalton Hooker 

(ii) It was based on natural affinities among the organisms 

(iii) It takes into account not only the external features but also internal features 

(iv) Internal features like ultrastructure, anatomy, embryology and phytochemistry are also considered 

(v) Evolution is also taken into account. 

How many of the above statements are correct ?