context: Yesterday, I paid my bills for the month of May. I have a number of bills that I need to keep track of, including heat, water, and gas. I have to pay three different companies to clear those bills. In order to remind myself of the bill payment deadlines, I have a sticky note on my refrigerator door with all of the upcoming month's deadlines. A few days ago, I noticed that the deadlines for May were coming up, so yesterday I decided to just tackle all of my payments. I got out my checkbook and a ballpoint pen. I wrote one check to the heat company for $120, one check to the water company for $100, and one check to the gas company for $130. I then stuffed each check into a separate envelope, wrote the addresses of the companies onto their respective envelopes, and dropped off the envelopes into the mail pickup box.
question: Where did they pay the bills?
reference: at home
candidate: The refrigerator.