Finish the following sentence with the best choice: What kind of soil needs to be aerated most often?

Choices:
- Sand-heavy soils need to be aerated frequently, about once a year, since the soil tends to be dense and compact.
- Clay-heavy soils need to be aerated frequently, about once a year, since the soil tends to be dense and compact.

Answer:
Clay-heavy soils need to be aerated frequently, about once a year, since the soil tends to be dense and compact.