8.15 Two containers were filled with water as shown below. Both the thermometers read 20°C. Which of these sentences is true? (A) The water in 1 is warmer than the water in 2 (B) The water in 2 is warmer than the water in 1 (C) The temperature of the water in 1 and 2 is the same (D) The thermometer in container 1 is probably not correct