enumerar com letras látex
\usepackage{enumitem}
...
\begin{enumerate}[label=\Alph*]
\item this is item a
\item another item
\end{enumerate}
or
[label=\alph*)]
chink
\usepackage{enumitem}
...
\begin{enumerate}[label=\Alph*]
\item this is item a
\item another item
\end{enumerate}
or
[label=\alph*)]