The campaign for your Programmatic Guaranteed deal with a major clothing line was scheduled to go live today, but you notice that no impressions were run and no spend was reported in Display & Video 360. What first step do you take in the Deal Troubleshooter to figure out the issue?

Make sure incoming bid requests are checked.
Make sure your deal complies with publishers.
Make sure the line item for potential targeting issues is checked.
Make sure potential reach issues are checked.