Thanks Deepak Rai. The answer is correct and thanks for your illustration. There is no CORRECT button found below the reply button. I have submitted a case to support team about the absence of the Correct button. I will mark it as correct as soon as they figured out. Sorry for the inconvenience. I will mark both this discussion as well as the previous discussion (similar scenario) once it has been figured out.
You are Welcome!!! The CORRECT button is under my Reply in your main Thread, not in email. Please use it from your main thread under my reply to close Thread.