Whistle Works manufacturers safety whistle keychains. They have the following information available to prepare their master budget: October November December Units to be produced 4,500 4,750 5,200 Whistle Works sells each whistle for $12. It takes 3 ounces of metal to produce each whistle at a cost of $0.50 per ounce. They prefer to have 10% of materials required for the following month's production in ending inventory as well. What is the total cost of direct materials for October to meet production needs? $2,250 $2,263 $6.712.50 $6,787.50