The correct option is C It is smaller than Neptune.
Uranus, named after the ancient Greek god of sky, is the seventh planet from the Sun. It is a giant ice planet about 4 times bigger than Earth with 27 moons. The planet has thin rings only visible through a telescope, and its axis is highly tilted (>90∘).
However, Neptune is the most distant planet from the Sun, and is smaller than Uranus.