Question with no influence to score

Hello,
I would like to know if your plugin makes it possible to ensure that, when the user ticks an answer that I will name ‘not concerned by this question’, the question does not have an influence on the score.
For example, the questionnaire includes 3 questions:

Quesiton 1
Answer A (not concerned)
Answer B
Answer C
Answer D (correct answer)
Question 2
Answer A (not concerned)
Answer B
Answer C
Answer D (correct answer)
Question 3
Answer A (not concerned)
Answer B
Answer C
Answer D (correct answer)

In this example, the user answered answer A to question 1, and answer D (correct answer) to the following 2 questions.

The calculation of the result should be as follows: 2/2 or 100%.

Thanks.

 

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