A swimming pool with a rectangular shape measures $50\,\text{m}$ in length and $25\,\text{m}$ in width. The water in it is $2\,\text{m}$ deep. The density of the water is $1000\,\text{kg m}^{-3}$. What is the mass of the water in the pool?
- A$2.5\,\text{kg}$
- B$2500\,\text{kg}$
- C$77\,000\,\text{kg}$
- D$2\,500\,000\,\text{kg}$