When Writing C# Code, How Do You Indicate a Namespace

Multiple Choice

When writing C# code, how do you indicate a namespace?

A) You must specify the namespace by using the namespace keyword, followed by the namespace.
B) You must use the declare namespace keywords, followed by the namespace.
C) You must utilize the using clause, or using directive, by specifying using, followed by the namespace.
D) You must use create a file called "namespace", and include all namespace code in this file.Then, the namespace can be used by name in your program.