The diagram presents the waveform of a signal on a cathode-ray oscilloscope screen. The time-base is set at $5.0\,\text{ms}$ per division. The Y-gain is set at $5.0\,\text{mV}$ per division. What are the amplitude and the frequency of the signal?
- Aamplitude $= 10\,\text{mV}$, frequency $= 50\,\text{Hz}$
- Bamplitude $= 10\,\text{mV}$, frequency $= 100\,\text{Hz}$
- Camplitude $= 20\,\text{mV}$, frequency $= 50\,\text{Hz}$
- Damplitude $= 20\,\text{mV}$, frequency $= 100\,\text{Hz}$