$19.$ The function $(($x$)=3$n$?+10$n log n$+1000$n$+4$ log n$+9999$ belongs in which of thefollowing complexity categories:$($a$)$ O$($lg n$)($b$)$ A$($n$?$ log n$)($c$)$ O$($n$)($d$)$ A$($nlgn$)($e$)0(17)($f$)$ None of these