The team has just completed Iteration 7 in the development of a mobile app. The amount of work completed per iteration varied in the first three iterations, but since then they increased the work completed in each iteration. However, in Iteration 7, that number was roughly the same as the previous iteration. The project sponsor is concerned and wants to know what happened. What is the most likely cause? Group of answer choices Velocity is stabilizing after this number of iterations The team hit a roadblock as they reached the product features that are riskier to develop. The team reached the Storming stage and needs to be refocused. The sponsor has been changing the product requirements