5.If Clear Sky Sailmakers accepts a special order for 3,000 sails at a price of $215 per unit, fixed costs remain unchanged, and no variable marketing and administrative costs will be incurred for this order, how would operating income be affected? (NOTE: Assume regular sales are not affected by the special order.)

a.Increase by $50,000

b.Increase by $150,000

c.Increase by $0

d.Decrease by $50,000