Sound moves through air as alternating compressions and rarefactions. Which statement gives the correct comparison between a compression and a rarefaction?
- AIn a compression, the wavelength is longer than in a rarefaction.
- BIn a compression, the wavelength is shorter than in a rarefaction.
- CIn a compression, the density of the air is greater than in a rarefaction.
- DIn a compression, the density of the air is lower than in a rarefaction.