What should you do?

You are developing an application.
The application contains the following code:

When you compile the code, you receive the following syntax error message: "A previous catch clause already catches all exceptions of this or a super type (‘System.Exception’)."
You need to ensure that the code can be compiled. What should you do?
A. Catch the ArgumentException exception instead of the ArgumentNullException exception.
B. Throw a new exception in the second catch block.
C. Catch the ArgumentNullException exception first.
D. Re-throw the exception caught by the second catch block.

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