[A] The Development Team adds the new work to the Sprint Backlog.

As new work with respect to the agreed-upon sprint goal is required, the Development Team adds it to the Sprint Backlog. Only when large amounts of new work appear to be needed (which will jeopardize the overall Sprint goal), the Product Owner is consulted to discuss the situation. As work is performed or completed, the estimated remaining work is updated. When elements of the plan are deemed unnecessary, they are removed. Only the Development Team can change its Sprint Backlog during a Sprint. The Sprint Backlog is a highly visible, real-time picture of the work that the Development Team plans to accomplish during the Sprint, and it belongs solely tot the Development Team. The Product Backlog is owned by the Product Owner, so the Development Team cannot add work to the Product Backlog by itself.