Super Shoes Company manufactures sneakers. The Athletic Division sells its socks for $18 a pair to outsiders Sneakers have manufacturing costs of $6.00 each for variable and $6.00 for fixed. The division's total fixed manufacturing costs are $315,000 at the normal volume of 70,000 units. The European Division has offered to buy 15,000 Sneakers at the full cost of $12. The Athletic Division has excess capacity and the 15,000 units can be produced without interfering with the current outside sales of 70,000. The 85,000 volume is within the division's relevant operating range. How much operating income would increase (decrease) if the Athletic Division accepts the offer? $0 $(90,000) $90,000 $180,000