A Non-Performing Asset (NPA) is defined by the Reserve Bank of India (RBI) as a loan or advance for which the interest and/or instalment of principal remains overdue for a specified period. Statement 1 is correct; for a term loan, if interest and/or principal is overdue for more than 90 days, it is classified as an NPA. Statement 2 is correct; for agricultural advances, specific criteria apply based on crop seasons. For short- duration crops (those with a crop season of up to one year), if the instalment of principal or interest remains overdue for two crop seasons, the loan is classified as NPA. Statement 3 is correct; in the case of bills purchased and discounted by banks, if the bill remains overdue for a period of more than 90 days, it becomes an NPA.