Advanced MCQ — multiple correct answers, 5-6 options, better distractors

Hey ! I really appreciate the platform especially with the possibility of creating lots of MCQ fastly that permits me to redo them as much as I want at anytime so as to see my progress over time, but as I use this system a lot I'm wondering if there would be the possibility of having multiple correct answers for the same question so as to make them more challenging and "realistic" (as it's often the case that there can be more than one answers correct + the possibility "None of these answers are correct"). In addition, it would also be best to add the possibility for correcting certain questions in case the AI misinterprets the information, as it's possible with flashcards, and the option of reviewing the quiz slides and seeing where the questions come from based on the information highlighted. I sincerely hope that you will consider these suggestions. You are doing a great job, and I believe this would only make the platform even better. Thanks!