New Line (\n) in Options - how to add

In the customization process of my field of type “Select” I have to define “Options” to be chosen.
Each option is one line.
What I need is an option, which description text will be shown/printed in 3 lines. I mean when the user selects this option, actually 3 lines will be displayed/printed (in PO).
I tried to fill the line as “AAAA \n BBBB”, but \n is displayed instead of line break.
Please, how can i implement this?
Or may be I need to take another field type…?
Thanks a lot ahead.

Have a look here