How does Google Merchant Center interact with Google Ads?

• Google Merchant Center passes inventory data to Google Ads so advertisers can use the data to build a Shopping campaign.
• Google Ads passes inventory data to Google Merchant Center so advertisers can use the data to build a Shopping campaign.
• Google Merchant Center passes campaign performance to Google Ads so advertisers can use the data to influence future campaign builds.
• Google Ads passes campaign performance to Google Merchant Center so advertisers can use the data to influence future campaign builds.

The right answer: Google Merchant Center passes inventory data to Google Ads so advertisers can use the data to build a Shopping campaign.