What's wrong with the statement that indoor hot air gives off heat to glass, liquefies into small water droplets and then solidifies into ice flowers?

The process by which a substance changes directly from a gaseous state to a solid state is called sublimation. In winter, the outdoor temperature is very low and the indoor temperature is very high. When the water vapor in the indoor air meets the glass with low temperature, it directly changes from gas to solid on its inner surface and condenses into small ice crystals, which are called "ice flowers".

So choose C.