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Which of the following is NOT true about class AsyncTask?
Correct Answer: C
Explanation/Reference: AsyncTask must be subclassed to be used. The subclass will override at least one method (doInBackground(Params...)), and most often will override a second one (onPostExecute(Result).) Incorrect: A: AsyncTask must be subclassed to be used. B: AsyncTask enables proper and easy use of the UI thread. This class allows to perform background operations and publish results on the UI thread without having to manipulate threads and/or handlers. D: The three types used by an asynchronous task are the following: Params, the type of the parameters sent to the task upon execution. Progress, the type of the progress units published during the background computation. Result, the type of the result of the background computation. References: http://developer.android.com/reference/android/os/AsyncTask.html