A company has provided the following data: Sales 3,000 units Sales price $70 per unit Variable cost $50 per unit Fixed cost $25,000 If the sales volume decreases by 25%, the variable cost per unit increases by 15%, and all other factors remain the same, what will the outcome be for operating income? Select one: a. Decrease by $15,000 b. Increase by $20,625 O c. Decrease by $91,875 Od Decrease by $3,125