Background
You are developing an online shopping web application.
Business Requirements
- A user is not required to provide an email address. If a user enters an email address, it must be verified to be a valid email address.
- Information about the first product on the product page must fade out over time to encourage the user to continue browsing the catalog.
- Administrators must be able to edit information about existing customers.
- Administrators also must be able to specify a default product on the product page.
Technical Requirements
General:
- The web store application is in a load-balanced web farm. The load balancer is not configured to use server affinity.
- The web store application is an ASP.NET MVC application written in Visual Studio.
Products:
- The value of the productId property must always be greater than 0.
- The Products page for mobile devices must display to mobile users. The Products page for desktop devices must display to desktop users.
Storage:
- The data must be stored in a serialized XML data format.
- Serialized objects must be schema-independent.
Exception handling:
- Exceptions originating from IIS must display a page with support contact information.
- Some page links expire, and users who access these links encounter 404 errors.
- Exceptions must be logged by using the WriteLog method of the Utility class.
Browser and device support:
- The application must support image format conversions from .bmp to .jpeg for mobile devices.
- The application must support image format conversions from .bmp to .png for desktop devices.
Application Structure
You need to update the routes to ensure that a product is always displayed on the product page.
Which code segment should you use?
A. Option A
B. Option B
C. Option C
D. Option D