Classify this soil according to Unified System. Please provide the Group Symbol and the Group Name. How appropriate is this soil as a subgrade material for roadways?

$\backslash$table$[[$Size $(mm),\%$ Passing$],[4\mathrm{.}75($No$\mathrm{.}4),85],[2($No$\mathrm{.}10),75],[0\mathrm{.}425($No$\mathrm{.}40),34],[0\mathrm{.}075($No$\mathrm{.}200),14],[$LL$,30],[$PL$,14]]$