Which of the following is not a reasonable estimate for the physical property shown?
- A$2 \times 10^3\ \text{W}$ for the power dissipated by the heating element of an electric kettle
- B$4 \times 10^2\ \text{m}^3$ for the volume of water in a swimming pool
- C$5 \times 10^5\ \text{N s}$ for the momentum of a lorry moving along a road
- D$6 \times 10^2\ \text{N}$ for the weight of a fully grown racehorse