In the Book of Holy Qu'ran, specifically, chapter 49 which is Al - Hujurat (which means "The Room") verse 13. It started with "O mankind, indeed We have created you from male and female and made you peoples and tribes that you may know one another. Indeed, the noblest of you in the sight of Allah is the most righteous of you. Indeed, Allah is Knowing and Acquainted."
therefore, in this case, the right answer is "the most righteous ones."
