For a stationary wave to be formed, two waves must move in opposite directions through the same region of space. Which statement about the characteristics of the two waves must also be correct?
- AThe waves must have equal frequency, but a different speed and wavelength.
- BThe waves must have equal speed, but a different wavelength and frequency.
- CThe waves must have equal speed, frequency and wavelength.
- DThe waves must have equal wavelength, but a different speed and frequency.