Assume that the following quantity discount schedule, for a particular bearing, is available to a retail store:Order sizeDiscount$0-490\%50-995\%100-19910\%200$ and above$12\%$The cost of a single bearing with no discount is Rs$\mathrm{.}30.$ The annual demand is $250$ units. Ordering cost is Rs$\mathrm{.}20$ per order and annual inventory carrying cost is Rs$\mathrm{.}4$ per unit. Determine the optimal order quantity and the associated minimum total cost of inventory and purchasing costs if shortages