Benjamin Company had the following results of operations for the past year: A foreign company offers to buy 4,000 units at $7,50 per unit. In addition to varlable manufacturing costs, selling these units would increase fixed overhead by $600 and selling and administrative costs by $300. Assuming Benjamin's productive capacity is 16,000 units per year and it accepts the offer, its profits will: Select one: a. Decrease by $10,000. b. Decrease by $10,900. c. Decrease by $6,000 d. Increase by $9,100. e. Increase by $4,300