Answer:
the answer would actually be the debt ratio remains the same
Explanation:
lets say you pay off and close the card with 1,800 it would no longer show on your credit and you will be left with a 100/100 debt ration since the only debt you are in will be including the other two cards 2,600 and 3,500 and they are maxed out same goes if you pay one of the other cards off instead and close it you will be left with a 100/100 debt ratio but if you only pay off a card and not close it then the debt ratio will change because the card will show up but its balance will be 0.00