Hello, I am a TA in a course. I have put an online MC quesionts assignment to let the students to take before April 8th. But now one student says that he had taken the MCs and submitted it while the canvas shows that he had not submitted the assignment yet and he got no grade for that assignment due to missing submission. So I am wondering is there any method I can check whether this student is telling the truth or not? Thank you so much!