The . . . . . . . . advance is an advance where payment of interest and/or repayment of installment of principal remain unpaid for a period of two quarters or more.

Answer: Option B

Non-Performing Asset (NPA) is a loan or advance where interest and or installment of principal remains overdue

If the dues remain unpaid for a period of two quarters or more that loan is classified as Non-Performing

This means the asset stops generating income for the bank and becomes a financial risk

Therefore the correct answer is Option C (non-performing)