A grain size distribution data is shown in Tables $2$ and $2.$ The soil has $LL=65$ and $PL=33.$

$($a$)$ What is the soil USCS classification?

$($b$)$ Approximate the swelling potential of the soil.

$($c$)$ Is the soil frost susceptible?

Table $1$: Grain size distribution data for question $2$

Table $2$: Grain size distribution data for question $2($cont$.)$