Correct option is B
Eid al-Fitr
Eid al-Fitr is celebrated by Muslims worldwide because it marks the end of the month-long dawn-to-sunset fasting of Ramadan.
Eid al-Fitr is important in Islam because it was a festival started by our Prophet Muhammad (Peace be upon him).
Eid al-Fitr is celebrated on the first day of Shawwal, the tenth month of the Islamic calendar. The date of Eid al-Fitr varies from year to year, as the Islamic calendar is a lunar calendar.