A prokaryotic cell with a diameter of $0.25\,\mu\text{m}$ is enlarged $50\,000$ times in an electron micrograph. What will its diameter be on the electron micrograph?
- A$1.25 \times 10^{-1}\,\text{mm}$
- B$1.25 \times 10^{0}\,\text{mm}$
- C$1.25 \times 10^{1}\,\text{mm}$
- D$1.25 \times 10^{2}\,\text{mm}$