A cell was observed using a microscope. The actual length of the cell is $0.025\,\text{mm}$. The magnification of the image is $\times 400$. What is the image length of the cell?
- A$10\,\text{mm}$
- B$100\,\text{mm}$
- C$1600\,\text{mm}$
- D$16\,000\,\text{mm}$