a) Roman
b) Sian
c) Toman
d) Bron
The Iranian lawmakers voted on May 4, 2020 to change Iran’s national currency from ‘rial’ to ‘toman’. The lawmakers approved an amendment to Iran’s Monetary and Banking Act of Iran to make the change. Iran’s existing currency will continue to remain valid alongside “toman” for two years, during which the old coins and bills will be gradually collected to replace them with new ones.