Classify soil A depicted in the table according to the AASHTO classification system.

$\backslash$table$[[,\backslash$table$[[$Sieve analysis$-],[$Percgnt finer$]],],[$Soil$,$No$.10,$No$.40,$No$.200,\backslash$table$[[$Liquid$],[$limit$]],\backslash$table$[[$Plasticity$],[$Index$]]],[$A$,92,68,30,42,18]]$

Select one:

a$.A-2-4$

b$.A-2-7$

c$.A-2-6$

d$.A-2-5$