1. "Do you remember that cold spell last winter?" Ezra asked. "There was actually ice on the lake." Lottie nodded. "Yes, I remember. But why?" Her husband glanced at a piece of paper in his hand. "I just figured out something about the temperature that day," he replied. "The Celsius and Fahrenheit readings both had 5 as the last figure." What were those readings?

Temperature -5 degrees C or 15 degrees F

Temperature -15 degrees C or 5 degrees F

Temperature -25 degrees C or 5 degrees F