How can i make only one "Check box" selectable ?

Hi,

I have a series of images where the student has to select the proper answer for each and i am using 4 check boxes for each image, and I want only one box selected at any time. If the student choose number 1, number 2, 3 and 4 are not; if he chooses #2, well # 1, 3 and 4 are not and so on...

Is there an easy and direct way to do this, in Storyline 3?

Thanks