The temperature in Taychester is always at least 10 degrees lower than the temperature in Chariesville. However, the average resident of Charlesville spends 10 to 20 percent more on winter heating expenses than does the average resident of Taychester. Each of the following, if true, helps to resolve the apparent paradox described above EXCEPT: ['Heat loss due to wind is less in Taychester than in Charlesville.', 'Houses in colder climates are usually better insulated than houses in warmer climates.', 'Although Chariesville is always fairly warm during the daytime, temperatures in Charlesville drop steeply at night.', 'Utility rates in Taychester are lower than utility rates in Charlesville.']