In a laboratory vacuum, a ball is released and descends $200\text{ cm}$. Which statement describes the ball's acceleration?
- AIt is greater at $10\text{ cm}$ than at $200\text{ cm}$.
- BIt is greatest at $200\text{ cm}$.
- CIt is smaller at $50\text{ cm}$ than at $100\text{ cm}$.
- DIt is the same value at $50\text{ cm}$ as at $150\text{ cm}$.