An astronomer is using a telescope to observe several objects in the Solar System. She records her observations in the chart below. Object Description W object that has a "tail" made of frozen gas and liquid X rocky object that orbits a planet Y small and rocky object that orbits the Sun and is located between Mars and Jupiter Z large object that orbits the Sun and has several moons Which of the objects described in the chart is a planet? A. Z B. X C. W D. Y