Question:
To group multiple RadioButton controls together, which property will you set for each RadioButton control in the group?

Option A):
Specify the same GroupID for each RadioButton.
Option B):
Specify the different GroupName for each RadioButton.   
Option C):
Specify the same GroupName for each RadioButton.
Option D):
Specify the same ID for each RadioButton.   

Correct Answer is Option C):
Specify the same GroupName for each RadioButton.

Explanation:
GroupName property enables you to group RadioButton controls. Suppose that you have 10 RadioButtons and you want to create two different group of 5 RadioButton in each group. You have to provide same groupname to 5 RadioButton (Example GroupName=color) and another name but same for remaining 5 button (Example GroupName=City)