[Tex/LaTex] No indent in description list

descriptionindentationlists

I have the following text in LaTeX:

enter image description here

I want that the second sentence of item A starts below the first word of the first sentence (So 'It is raw…' is outlined with 'Data are facts…'). I have search on the internet for an example in special for a description list, but I can not manage it (already tried \noindent and other packages).

The code (introduction.tex):

\begin{description}
\item[A)] Data are facts, events or transactions and so on which have been recorded. 
               It is raw material input from which information is produced.
\item[B)] Information is data that has been processed and communicated in such 
               a way that it can be interpreted and understood by the recipient.
\end{description}

The main .tex file is called thesis.tex. In the main file packages are declared.

Best Answer

Just to add to @Werner's excellent answer:

If you have very long labels in a description environment, sometimes it actually looks nicest to have the text wrap underneath the start of the labels, like so:

\documentclass{article}
\usepackage{enumitem}% http://ctan.org/pkg/enumitem
\begin{document}
\begin{description}[style=unboxed,leftmargin=0cm]
\item[A)] Data are facts, events or transactions and so on which have been recorded. 
               It is raw material input from which information is produced.
\item[Some labels are pretty long] Information is data that has been processed and communicated in such 
               a way that it can be interpreted and understood by the recipient.
\end{description}
\end{document}

Resulting in: description environments look good with leftmargin=0cm

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