The correct answer is A. 310.
The economic order quantity (EOQ) is the optimal quantity of an item to order at a time in order to minimize the total inventory costs. It is calculated using the following formula:
EOQ = â(2Annual ConsumptionOrdering Cost)/(Carrying Cost*Purchase Price)
In this case, the annual consumption is 24000 units, the ordering cost is Rs 10 per order, the purchase price is Rs 100 per unit, and the carrying cost is 5%. Substituting these values into the formula, we get:
EOQ = â(22400010)/(5*100) = 310.
The other options are incorrect because they do not represent the EOQ for the given values.