Question: What is the difference between System.String and string?

1. string is used for fied-size strings in C#, while System.String is used for all the strings.
2. There is no such class as System.String.
3. There is none?string is an alias for System. String.
4. System.String is a VB.NET data type, while string is a C# type.

Answer: The correct answer of the above question is Option C:There is none?string is an alias for System. String.