Correct option is D
Russia successfully test-fired the "Sarmat" intercontinental ballistic missile (ICBM) in April 2022. The Sarmat, also known as the RS-28, is considered one of the most powerful ICBMs in the world due to its advanced features, including a very high range and the ability to carry multiple nuclear warheads. This missile is part of Russia's strategic arsenal and is designed to enhance the country’s nuclear deterrence.
The other countries listed (United States, Iran, and North Korea) have their own missile programs, but none of them tested a missile with the capabilities of the Sarmat in April 2022.
