What was the code name of the nuclear bomb dropped by America on Japan in Nagasaki in 1945?

Fat Man

The correct answer is Option (3) - Fat Man

Japan commemorates the 9^th of August every year as Nagasaki day. On August 9, 1945, the United States dropped an atomic bomb on Nagasaki, Japan. It was code-named “Fat Man” due to the design of the bomb as it had a wide, round shape. On August 9, 1945, a US B-29 bomber dropped an atomic bomb on the city, killing nearly 20,000 people.