Persian was the official language of Sindh During:

1. Some period
2. Sama period
3. Arghun period
4. All of these periods

The Arghun dynasty was a dynasty of either Mongol, Turkic, or Turco-Mongol ethnicity, who ruled over the area between southern Afghanistan, and the Sindh province Pakistan from the late 15th century to the early 16th century.