Is there a way to weight answers to multiple choice answers (as in BrightSpace - D2L)?

To keep grade book calculations simple, I typically reward 100% correct answer and 50% for a wrong answer (which gives credit for at least attempting the quiz question).

Example:

Blue is a color.

a. Yes (100%)

b. No (50%)

c. not-Yes (50%)

The way it is implemented in the grade book, if a student gets one question correct, it is completely cancelled out if they get one wrong.

I looked at Multiple Answer questions and it doesn't do this either.

Thank you!