Develop and bulk sms system

Using Microsoft Visual Studio Integrated Development Environment (IDE), C# programming language, and SQL server database, develop a working artifact of your design in Task A. Please pay attention to the following: 1. Ensure the software demonstrate n-tier architecture. 2. Show clear interaction with database and reflect efficient database design/structure. An example of interaction is data insert or update events. 3. Reflect attributes of excellent coding technique, the program comes should be readable, efficient, extendable, unit-testable, and consistent. 4. The artifact should be adaptable to a real-world situation. 5. Show best practices such as error handling, user input validation, responsiveness using CSS/ JavaScript, and encryption of sensitive data. 6. The program code should compile and run without syntax errors.