An object moves with a steady speed of $10\,\text{m s}^{-1}$ for $10\,\text{s}$. Over the following $5\,\text{s}$, it accelerates uniformly until its speed becomes $20\,\text{m s}^{-1}$. What total distance does the object travel?
- A$150\,\text{m}$
- B$175\,\text{m}$
- C$200\,\text{m}$
- D$300\,\text{m}$