2. troy enterprises uses a continuous review inventory control system. the firm operates 50 weeks per year, with an annual demand of 50,000 units, an ordering cost of $35 per order, a holding cost of $1 per unit per year, and a lead time of 3 weeks: (10 points) (a) how many units should be ordered at a time (rounded to the nearest unit)? (b) what is the reorder point?