4. [10pts] Write a logical argument which determines what I ate for dinner. Number each step in your argument and cite which rule you use for each step. 1. I did not have a coupon for hamburger buns. 2. I had hamburgers or chicken for dinner. 3. If I had hamburgers for dinner then I bought hamburger buns. 4. If I did not have a coupon for hamburger buns then I did not buy hamburger buns