When Iran officially became an Islamic Republic on ___________?

ایران باضابطہ طور پرکب اسلامی جمہوریہ بنا؟

April 01, 1969

April 01, 1989

April 01, 1959

April 01, 1979

Ruhollah Khomeini became Iran Supreme Leader: December 1979

Iran has: theocratic system of government

Revolution in Iran: 1979