Enumeration with bold-face roman numbers

Question

I want to enumerate my items by (I), (II), etc., for which I did the following:

\begin{enumerate}[(I)] 
 \item 
\end{enumerate}

Now I want to make them bold: (I), (II), ...

I followed this link but could not find solution to my question, nor the techniques worked in my problem. How can we do this?

Answer 1

\documentclass{article}
\usepackage{enumitem}
\begin{document}
\begin{enumerate}[label=\bfseries(\Roman*)] 
 \item this is text
 \item this is text
\end{enumerate}
 \end{document}