From Power BI Desktop, you create a data source by importing a Cosmos DB for NoSQL item collection. You connect to the Cosmos DB account, database, and collection, but the preview displays only a list of items named Record. You need to select individual fields from items in the collection that you want to load into Power BI Desktop. What should you do first? Open Power Query Editor. Retrieve the Cosmos DB account key. Retrieve the Cosmos DB connection string. Switch to the model view.