Here's a problem to solve: Which list has objects in order from the smallest to the largest?

Among the 4 following options, which is the correct answer?

- A: Earth, the Sun, solar system, the Milky Way galaxy
 
- B: the Moon, the Sun, Earth, the Milky Way galaxy
 
- C: the Sun, the Moon, Earth, the Milky Way galaxy
 
- D: solar system, the Milky Way galaxy, Earth, the Moon
 