Identify whether each statement is true or not. You do not need to prove your claim.

$($a$)$ n

log n $=$ O$($n$)$

$($b$)$ nlogn $=$ O$($n$)$

$($c$)16$n $=2$O$($n$)$

$($d$)$ n$$n $=$O$($nlogn$)$

$($e$)$ loglogn $=$ O$($logn$)$

$($f$)$ log$2$ n $=$ O$($logn$)$