The correct answer is letter A
The Islamic religion started or was born exactly in the year 622, according to the Christian calendar. Such a date is usually considered a milestone in the history of Islam, as it was when Muhammad, shortly after receiving divine revelation, was forced to move from the city of Mecca to the neighboring Medina, since the inhabitants of that city were not, in a first moment, sensitive to the preaching of the prophet. Such displacement (or "flight", according to some), received the name of Hijrah, and was of such importance that it ended up marking the beginning of the Islamic calendar; Thus, the year 622 of the Christian calendar is Year I of the Hegira in the Muslim calendar.
