Saba Switchgears Pvt$.$ Ltd$.$ requires $2,000$ units of power spring every year. The unit cost of

this item is Rs$\mathrm{.}200.$ The holding cost per unit per year is $20$ percent of unit cost. The ordering cost

is Rs$\mathrm{.}400$ per order. The company is considering the following three procurement policies:

Policy I: Place four orders of equal size.

Policy II: Place an order for $1000$ units each time, and avail a $10$ percent discount on the price per

unit.

Policy III: Follow the EOQ concept.

Which is the best policy for Saba to implement?