Multiple choice quiz

hi, i am currently trying to create a mulitple choice quiz where i got a quite similar tutorial from this colin moock website. alright, what i want to do is this -

i want to create a multiple choice like this, where user click the answer and they will be linked to a feedback page, telling them what is wrong with their answer. Then they can click an “OK” button to proceed to the next scene where there will be the next qns. the reason why i am not putting all in the same scene is because i need to do up a different scenario for each of the qns. if i were to have ten qns in one scene, i was told it is “no good” by my lecturer. at the end of the ten qns, there will be a grading of points.

this is my problem :
i want the script to be able to track all correct answers despite all qns being on different scenes. because i wan the grade to show at the evaluation scene. is it possible to capture the answer user has clicked on, store to the array, store in another array as one point if it is a correct answer and click next to go to the next scene for the 2nd qns, not next frame.