I was in the cafe that day . And btw , normally I do use plate under sandwich but I had just cleaned that table and was too lazy to take a plate , lool . I think I did promise to post pictures of the cafe once , so here is a few .

Question: Why did they eat their sandwich without a plate ?
Answer: They were unable to find any plates .They knew the table was clean .None of the above choices .The plates were too far away from them .