What currency, divided into 100 smaller units, has been the official legal tender since the 1990s monetary reform?

• A The hryvnia
• B The tenge
• C The dram
• D The ruble ✓

The ruble (рубль) dates to the 13th century; the modern version was introduced in 1998 at a redenomination of 1,000 old rubles to 1 new.