Safety Works manufacturers safety whistle keychains. They have the following information available to prepare their master budget: Safety Works sells each whistle for $11. It takes 3 ounces of metal to produce each whistle at a cost of $0.30 per ounce. They prefer to have 10% of materials required for the following month's production in ending inventory as well. How many ounces of direct materials does Safety Works need to purchase in October to meet production needs? A. 13,965 ounces B. 5,385 ounces C. 4,600 ounces D. 13,635 ounces