The question asks which is NOT a treatment of NPA. Options A, B, and D are all valid NPA treatments: stopping accrual of income, providing for accrued but unrealized income, and making provisions for dues. Option C about reducing NAV by 1% is not a standard SEBI-mandated NPA treatment. While NPAs may impact NAV, there is no fixed 1% reduction rule. Therefore C is the correct answer as the statement that is NOT true.