Pluto is known as dwarf planet because which of the following reason/s:
- A. It has negligible mass
- B. It has not nearly round shaped
- C. It does not have always same neighbouring planet
- D. All of the above
Explanation
A dwarf planet is nearly round but has not cleared the neighbourhood around its orbit of other bodies. Pluto meets this condition, unlike the eight planets, which dominate their orbital zones.