B.Ltd. issued debentures at 94% for Rs.4,00,000 on April 01, 2000 repayable by five equal drawings of Rs.80,000 each. The company prepares its final accounts on December 31 every year. Indicate the amount of discount to be written-off every accounting year assuming that the company decides to write off the debentures discount during the life of debentures. (Amount to be written-off: 2000 Rs.6,000; 2001 Rs.6,800; 2002 Rs.5,200; 2003 Rs.3,600; 2004 Rs.2,000; 2005 Rs.400).