Which of the Following Statements Best Describes the Mawali

Which of the following statements best describes the mawali ?

A) They were peasants who performed artisan tasks in the Muslim community.
B) They were non-Arab Islamic converts who were considered second-class Muslims.
C) They  had special wealth or prestige.
D) They were slaves taken as part of conquest and expansion during the Caliphate.
E) They lived in the cities to have sufficient access to places of worship.