McDonald's Receipt

This is a receipt from McDonalds when my brother and I had lunch the other day...
He wanted barbeque sauce for his half of the Mcnuggets, I wanted sweet and sour. I was asked, "would you like any ketchup for your fries?" and I said "no thank you." After I paid and got my receipt, I looked it over. They included the two sauces, but why does it say "1 ketchup" and indented underneath, "1 no"? I found that very highly amusing. Waste of paper and ink to put in that somebody doesn't want ketchup, don't you think?
I think what was funnier was the fact that they still gave us ketchup.
They'll never learn.