Correct Answer Details + Notes

For the course modules I need to create - there are multiple choice questions - that when the correct answer is scored need to return some additional info too the student. There doesn't currently seem to be a way to do this.

Also we would like the student to be able to store notes to record their thought process during the course - I can see there is the option to add a long answer - so I presume this is the best way to capture this info for the student at the moment?