Consider the following statements regarding the criteria used by R.H. Whittaker (1969) for the Five-Kingdom Classification system: 1. Cell structure (prokaryotic vs. eukaryotic) was the primary basis of classification. 2. Thallus organization and mode of nutrition were key criteria used to distinguish kingdoms. 3. Phylogenetic relationships were completely ignored in this system. Which of the statements given above is/are correct?

Options:

• A: 2 and 3 only
• B: 1 and 2 only
• C: 1 and 3 only
• D: 1, 2 and 3

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