Radio Button

Good evening,
I have created a setup which works wonderfully but unfortunately I have someone who gets something different than my default!

It is about a radio button with several selection possibilities!
Example of my selection:

C: \ my program
D: \ my program
E: \ my program
F: \ my program

However, the following options are available:

Option 01
Option 02
Option 03
Option 04

What did I do wrong?