f a special sales order is accepted for 2,600 mattresses at a price of $310 per unit, fixed costs increase by $6,600, and variable marketing and administrative costs for that order are $6 per unit, how would operating income be affected? (NOTE: Assume regular sales are not affected by the special order.) A. Decrease by $81,800 B. Increase by $88,400 C. Increase by $97,400 D. Increase by $81,800