Explanation
= As a Product Owner, James is responsible for managing the Iteration backlog and ensuring that the most valuable and feasible work items are delivered by the team1. If the team tells him that they may miss their Iteration commitment, James should collaborate with them to review and reprioritize the backlog, and identify the minimum viable increment that can be completed within the Iteration timebox2. James should not support adding an Innovation and Planning Iteration, as this would disrupt the cadence and synchronization of the Agile Release Train3. James should not agree to add a person from the System Team, as this would violate the team autonomy and self-organization principles4. James should not support splitting a Story into a coding story and a testing story, as this would create technical debt and compromise the quality and value of the deliverable5. References: = 1: Product Owner - Scaled Agile Framework6; 2: Iteration Planning - Scaled Agile Framework7; 3: Innovation and Planning Iteration - Scaled Agile Framework8; 4: Agile Teams - Scaled Agile Framework9; 5: Story - Scaled Agile Framework10