# How do I align enumerate items inside empty description?

I have an enumerate list inside an empty description item.

The minimal file is,

\documentclass[11pt]{article}

\begin{document}
\begin{description}
\item [A Label:]

\begin{enumerate}
\item A1.
\item A2.
\item A3.
\end{enumerate}
\end{description}

\end{document}

The problem is, A1 comes after the colon (:). As you can see here,

But I want A1 in a new line, with 1. aligned with 2.

I tried putting a \relax in the empty description item. Nothing was improved.

Any suggestion will be appreciated.

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