With reference to the city of Qom in Iran, which of the following statements is/are correct?
- It became a centre of Shi’ite Islam in the 8th century AD and a place of pilgrimage in the 17th century.
- Following the Islamic Revolution of 1979, Ayatollah Ruhollah Khomeini ruled the Islamic republic from this city until his death.
- The city is primarily known as a major industrial hub for automobile manufacturing and international trade.
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