A particular item has a demand of 9000 units/year. The cost of one procurement is Rs.108 and the holding cost per unit is Rs.2.40 /year. The replacement is instantaneous and no shortages are allowe(d) What is the optimum number of orders/year?
(a) 7 orders/year (b) 8 orders/year
(c) 9 orders/year (d) 10 orders/year