The president of Hill Enterprises, Terri Hill, projects the firm's aggregate demand requirements over the next 5 months as follows: Month Expected Demand Production Days Jan 1400 22 Feb 1600 18 Mar 1800 21 Apr 1814 21 May 932 22 7546 104 The costing information is given below Cost Information Inventory Carrying Cost $ 10 per unit per month Subcontracting cost per unit $15 per unit Average pay rate $10 per hour Standard work day 8 hours Overtime pay rate $ 20 per hour (above standard work day) Labor-hours to produce a unit 2 hours per unit Cost of increasing daily production $500 per unit rate (hiring and training) Cost of decreasing daily production $ 750 per unit rate (layoffs) What is the average demand requirement? ON 68 units OB. 73 units O C70 units OD.84 units