An agent must not place an order until the user explicitly approves the final price and quantity. Which two controls are most relevant? Select 2 answers.

1. Represent confirmation state explicitly and require it before the placement action
2. Treat any earlier greeting as approval of later order details
3. Validate the approved values again within the transactional action
4. Add the word approved to the action's display name
5. Allow the model to infer consent from a positive sentiment score