During the year to 31 December, 2006 Amar bought goods for resale at a cost of ₹ 7,55,500. His inventory at 1 January 2006 was valued at ₹ 1,57,400. He did not count his inventory at 31 December, 2006 but he knows that his sales for the year to 31 December, 2006 were ₹ 9,18,000. All sales were made at a mark up of 20%. Based on the information above, what was the value of Amar’s inventory at 31 December, 2006 ?
A. ₹ 1,36,300
B. ₹ 1,47,900
C. ₹ 1,66,900