The correct answer is - C. Japan.
The sumo wrestling is a traditional sport in the East Asian island nation of Japan. In this sport, the main attraction is the wrestling, and it is performed by two very overweight man (often over 150 kg) at a time. The rules of the sport are very simple, as the judge gives the mark for the beginning of the wrestling, the contestants can start, and they usually push each other in the chest, while holding the opponent around the belt occasionally. The winner is the one that manages to push out the opponent out of the line of the small ring, or get him down on the ground.
