The results from a soil compaction test are shown below:

Moisture content: $15\%$

Bulk unit weight: $21\mathrm{.}1k\frac{N}{m^3}$

The solid grains of the soil have a specific gravity of $2\mathrm{.}65.$

The dry unit weight, the dry unit weight at $0\%$ and $5\%$ air voids are respectively:

$14\mathrm{.}63k\frac{N}{m^3},13\mathrm{.}72k\frac{N}{m^3},$ and $14\mathrm{.}60k\frac{N}{m^3}$

$15\mathrm{.}63k\frac{N}{m^3},14\mathrm{.}72k\frac{N}{m^3},$ and $15\mathrm{.}60k\frac{N}{m^3}$

$16\mathrm{.}63k\frac{N}{m^3},15\mathrm{.}72k\frac{N}{m^3},$ and $16\mathrm{.}60k\frac{N}{m^3}$

$17\mathrm{.}63k\frac{N}{m^3},16\mathrm{.}72k\frac{N}{m^3},$ and $17\mathrm{.}60k\frac{N}{m^3}$