A Call ThreadPool.GetAvailableThreads to retrieve a handle to the thread.
B Create a custom class that contains two integer members and create an instance of that class containing the values that you need to pass to the method.
C Create a custom class that contains two integer members and a delegate for the Calc method and create an instance of that class containing the values you need to pass to the method.
D Call ThreadPool.QueueUserWorkItem and pass the Calc method and the instance of the custom class.
E Call ThreadPool.QueueUserWorkItem and pass only the instance of the custom class.