Currently if in a Test widget you have a multiple choice question and you decide to add several correct answers, the widget requires the student to select all of them and they get minus 1 point for each unselected correct option.
In some cases the possibility to add several correct options is important to make the student really think. And if you try to do this with the current Test widget, the students get confused when they notice that their final score is missing some points.
Please add an option that if there's several correct options for a question, choosing even one of them gives full points for the question.
