You need to ensure that the second operation is invoked only if the data processing operation throws an unhandled exception

You use the Task.Run() method to launch a long-running data processing operation. The
data processing operation often fails in times of heavy network congestion.
If the data processing operation fails, a second operation must clean up any results of the
first operation.
You need to ensure that the second operation is invoked only if the data processing
operation throws an unhandled exception.
What should you do?

A.
Create a TaskCompletionSource<T> object and call the TrySetException() method of the
object.

B.
Create a task by calling the Task.ContinueWith() method.

C.
Examine the Task.Status property immediately after the call to the Task.Run() method.

D.
Create a task inside the existing Task.Run() method by using the AttachedToParent
option.