Which code segment should you use?

You are developing an ASP.NET MVC application. The application is an order processing system that uses the ADO.NET Entity Framework against a SQL Server database. It has a controller that loads a page that displays all orders along with customer information. Lazy loading has been disabled. The
Order class is shown below.


You need to return the orders and customer information in a single round trip to the database. Which code segment should you use?
A.

B.

C.

D.

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