The diagram presents a wave. Which row is correct?
- Aamplitude $1.0\,\text{cm}$; wavelength $4.0\,\text{cm}$
- Bamplitude $1.0\,\text{cm}$; wavelength $8.0\,\text{cm}$
- Camplitude $2.0\,\text{cm}$; wavelength $4.0\,\text{cm}$
- Damplitude $2.0\,\text{cm}$; wavelength $8.0\,\text{cm}$