I want to create more menus under option "a" when selected. If the user entered option "a" I want it to have a couple menus for you to select and for one of the options is to return to the "Main Menu". This is the 2 problems I'm having trouble with. I tried doing this same format I have below for the menu here and put it under "A" block of code but that didn't work.

```
#!/bin/bash

ok=0;

while ((ok==0))
do
echo "Main Menu:"
echo -e "\t(a) More Menu Options "
echo -e "\t(b) Exit"
echo -n "Please enter your choice:"
read choice
case $choice in
    "a"|"A")
    ok=1

    ;;
    "b"|"B")
    exit
    ;;
        *)
        echo "invalid answer, please try again"
        ;;

esac
done

```