Detailed Solution:
The correct answer is “II and III”.
1) Maharashtra is the wealthiest state in India, with a Gross State Domestic Product (GSDP) of over $400 billion.
2) According to the 2011 census, Punjab has the highest percentage of Scheduled Caste (SC) population in India, at 31.94% of the state's total population.
3) States at the replacement level: Tamil Nadu, Kerala, Goa, Nagaland, Manipur, Tripura, Jammu and Kashmir, and Punjab