Attyre, a clothing company, sells novelty "Ok Boomer" sweatshirts for a selling price of $62, with a variable cost of $18 per unit and a fixed cost of $86 000 per year. A decrease in aggregate supply in the past year has caused the cost of materials for the sweatshirts to increase by $6.50. What is Attyre's change in profit due to these changes if they produce and sell 75 000 sweatshirts in one year? Select one: a. Decrease of $938 400 b. Decrease of $487 500 c. Increase of $487 000 d. Increase of $561 819