I am trying to make it so my students can see their results after completing their assignment and view which questions were correct or incorrect. I also want to prevent them from going back a week later to open an assignment to give another student the answers. I have "Show questions", "Show student responses" and "Only once after each attempt" selected along with "Indicate response as correct or incorrect". But when my students submit their work, Canvas does not show what they answered and marks every question with red x's. I also have Multiple attempts and Build on last attempt selected. I wonder why this is happening?