A trace appears on the screen of a cathode-ray oscilloscope (c.r.o.). The time-base setting is $2.5\,\text{ms cm}^{-1}$ and the Y-gain is $2.0\,\text{V cm}^{-1}$. Determine the frequency and the amplitude of the waveform shown on the c.r.o.?
- Afrequency $0.00375\,\text{Hz}$, amplitude $4.0\,\text{V}$
- Bfrequency $0.00375\,\text{Hz}$, amplitude $8.0\,\text{V}$
- Cfrequency $267\,\text{Hz}$, amplitude $4.0\,\text{V}$
- Dfrequency $267\,\text{Hz}$, amplitude $8.0\,\text{V}$