I want to have a selector in a "case" menu, so I show the options:

           1) option A
       2) option B
       3) option C


  

Then read the choice (let's say it's B), remove the previous menu and show this instead:

           1) option A
     » 2) option B
       3) option C


  

How can I do this? I know we can remove the current line with echo -ne "\r", but I have no idea of how to do it with several