C# programming and Please use visual studioAttach output

We introduced the structure of List this week, Create a List (not array) to hold the eight integer test scores: 85, 98, 100, 73, 67, 82, 92, and 87. Calculate and display the average score. Then, promote an input for another score, and add it to the List. Then display the nine scores and the new average. A sample output is shown below: The eight numbers are 85, 98, 166, 73, 67, 82, 92, 87. The average is 85.56 Please input a new score >> 166 85, 98, 166, 73, 67, 82, 92, 87, 166. The average is 87.11