A Factory Uses 625 Tons of Steel Per Year to Make

Multiple Choice

A factory uses 625 tons of steel per year to make reinforced rods.Its ordering costs are $40 per order,and its holding costs are $5 per ton.According to the economic order quantity (EOQ) model,approximately how often does the company have to place an order to maintain optimal order quantity? 

A)  ​Every 55 days 
B)  ​Every 56 days 
C)  ​Every 57 days 
D)  ​Every 58 days