When someone appears before a government investigatory committee, as Wells Fargo CEO Stumpf did, it can be a very stressful experience. To get a sense of how stressful such an appearance might be, see the 17+ minute video of Senator Elizabeth Warren's two rounds of questions for Wells Fargo CEO John Stumpf at the September 20, 2016 Senate Banking Committee hearing entitled: "An Examination of Wells Fargo's Unauthorized Accounts and the Regulatory Response." https://www.youtube.com/watch?v=xJhkX74D10M Identify aspects of management control that Senator Warren questioned CEO Stumpf about. Were CEO Stumpf's responses convincing? Explain.