How to create a simple "Choose the correct answer" script

I have been trying to fix is for weeks. I have made similar scripts but now its just the one statement or maybe the whole script. Maybe the community can throw in a little assistance. The set up is like this: There is the question in the background, it is static. There are three possible answers which are 3 seperate answers. They are labeled A,B and C (They contain their own box collider). The point is that if Lets say A is the right answer and the others are not. If A is selected they load the next scene. If B is selected, a GameObject will move towards the player(I have the movement script) Basically, I don't know what to type to let the script say, If you select the wrong answer, the gameobject will appear. Basically, popup if the answer is wrong. Do you mind assisting me? Thank you.