Suppose that g$($n$)=(($n$^5+$n$^(3+$sinn$)+1)/$

$($n$^2+$n$+1))$ Which of the following are correct?

A$.$ g$($n$)=($n$^2)$ B$.$ g$($n$)=\backslash$Theta $($n$^3)$ C$.$g$($n$)=$ O$($n$^4)$ D$.$All

Justify your answer