the second quistion please i added the first by mistake

Al Maha Company is specialized in mangoes distribution in the city of Muscat. Sales are 420 boxes per month (four weeks). It costs RO 100 to make and receive an order and holding cost is RO 3.5 per box per year. The prices per unit depend on quantities purchased such that the order quantities from 1 to 199 at a unit price RO 5; quantity 200 to 499 at a unit price 4.5 RO; and quantity 500 and more at a per unit price of 4 RO. What is the Economic Order Quantity while not consider the purchase cost? Round-up to the nearest integer Select one: a. 199 b. None is correct C. 537 d. 170 e. 166 Al Khaleej Inc. needs 450 kgs of a material per month. It costs RO 100 to make and receive an order, and it takes 16 workdays to receive it. The annual holding cost is 15% of purchase price. The price RO 2 per kg. The company is operating 6 workdays per week in a 52-week year. At what quantity in kgs you may place a new order? Round-up to the nearest integer Select one: a. 277 b. None is correct c. 247 d. 200 e. 188