What targeting rules display an ad to users who have viewed a product, but not purchased it?

1. Positively target all product viewers AND negatively target all product purchasers
2. Positively target all product viewers AND collect purchase IDs using u-variables
3. Positively target all product purchasers AND negatively target all product viewers
4. Negatively target all product purchasers AND collect purchase IDs using u-variables

Correct Answer:

• Positively target all product viewers AND negatively target all product purchasers