Who among the following stated that 'the caste system is not merely a division of labour, it is also a division of labourers'?

Arrange the following Indian sociologists in chronological order based on the year of publication of their first landmark major work: I. Irawati Karve II. André Béteille III. G. S. Ghurye IV. Dipankar Gupta Select the correct order:

Which among the following traditions in India was NOT classified and discussed by S. C. Dube in his framework for studying complex cultures?