Which one of the following is CORRECT regarding common agile practices? A. Many teams use 6-week iterations to create a demonstration and a retrospective at the end. B. Retrospectives help the agile team learn from its previous work on the project, its products, and the process. C. In a daily standup meeting, impediments are not discussed. Team leader works on impediments later. D. The ordered list of all the work, presented in a story form, is called a demonstration