New to Storyline: Quiz Points

Apr 06, 2023

First I have to say how much I love this community. It's really been one of the very few places I have seen people genuinely helping others which is so refreshing. 
Here's my question for a multiple answer question:
4 answers to select from. 3 are correct.
How can I give each answer a point value, so lets say each correct answer is worth 5 points. If they select 2 of the 3 correct answers, they receive 10 points, instead of the full 15 ?

Thank you in advance.

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