Consider the following statements I. Biological classification is the scientific ordering of organisms in a hierarchial series of groups on the basis of their relationships, i.e., morphological, evolutionary and others II. Whittaker classified organisms on the basis of autotrophic and heterotrophic mode of nutrition III. In five kingdom system of classification, living organisms can be divided into prokaryotic and eukaryotic cells on the basis of cell structure Which of the statements given above are correct?