store stastistic bar chat after close the active quiz

[yezi08]

Currently, the active quiz provides a bar chart of student responses for multiple choice questions. However, the bar chart is only shown during the time of that question. It will be a very useful improvement if the bar chart is stored and can be reviewed by teacher after the session is closed.

Could I know whether you have any plans to development this function, please? I am looking forward to hearing from you.

(Screen shot: https://pan.baidu.com/s/1pLnQ57t)