Drag and drop, scoring and options for multiple correct answers

I have created a drag and drop images activity that has students packing a healthy lunch by dragging food items to a lunch box. There are four drop zones labelled to correspond with a food group. Students are to drop 1 food item in each drop zone - but there are 2-4 food items that could be correct in each drop zone. I want the activity to be marked out of 4 (1 mark for each drop zone), but it is marking out of 10 (I think for the possible correct draggables). Is there a way to get it to mark out of 4?