Both C-sharp and VB can be used to write server-side scripting in ASP.NET. ASP.NET is a web development framework that supports multiple programming languages. C-sharp and VB are two of the languages that are commonly used for server-side scripting in ASP.NET. These languages provide the necessary tools and libraries to interact with the server, handle requests, and process data on the server side. Therefore, the correct answer is "Both b) and c) above."