Answer:
Option C is true.
Explanation:
Although scientist has discovered water in other planets, our planet is the only one where water is present in the 3 states of matter at the same time. There is warm water on the Caribbean oceans, but there is also great glacier near the geographical poles and is also present as vapor water in some circumstances.
Other planets known to have water are Mars, Saturn's moons Enceladus and Europe, and both ice giants Uranus and Neptune.