2-Consider the following function : $$ g(n)=2 n^{3}+3 n-20 $$ For which positive integer $j$ can you say that $$ \begin{array}{1} \text { a- } g(n) \text { is } o\left(n^{j} ight) W \text { b- } g(n) \text { is } \Omega\left(n^{j} ight) \text { c- } g(n) \text { is } \Theta\left(n^{j} ight) \end{array} $$ CS.VS.9711