How to prevent rules from multiplying?

For example, if a customer adds a product to the cart and the product satisfies both rules, but only one rule should be triggered:

• Go to the General Information tab and assign priorities to the rules based on the promotional significance of each product. For example, if both products A and B are in the cart and you want to reward only for product B, set the priority of the rule for product A to 20 and for product B to 10;
• Set the Stop further rules processing option to Yes. This will prevent rules with the same or lower priority from triggering, even if their conditions are met.