A student is examining an electrical signal with a cathode-ray oscilloscope (c.r.o.). The signal has a frequency of $50\,\text{kHz}$. Which time-base setting should be selected on the oscilloscope?
- A$50\,\text{ms cm}^{-1}$
- B$1\,\text{ms cm}^{-1}$
- C$10\,\mu\text{s cm}^{-1}$
- D$0.5\,\mu\text{s cm}^{-1}$