For the data given below, classify the soils according to the USCS. For each soil, give both the group symbol and group name.

$($

a

$)$

$6$

$5$

$\%$

$$material retained on No

$.$

$4$

$$sieve$,$

$3$

$2$

$\%$

$$retained on No

$.$

$2$

$0$

$0$

$$sieve$.$ Coefficient of uniformity is

$3$

$,$

$$while the coefficient of curvature is

$1$

$.$

$($

b

$)$

$1$

$0$

$0$

$\%$

$$material passed No

$.$

$4$

$$sieve$,$

$9$

$0$

$\%$

$$passed No

$.$

$2$

$0$

$0$

$$sieve$.$ LL

$=$

$2$

$3$

$,$

$$PL

$=$

$1$

$7$

$.$

$($

c

$)$

$7$

$0$

$\%$

$$material retained on No

$.$

$4$

$$sieve$,$

$2$

$7$

$\%$

$$retained on No

$.$

$2$

$0$

$0$

$$sieve$.$ Coefficient of curvature is

$1$

$.$

$5$

$$and coefficient of uniformity is

$5$