Robots are being used in sumo wrestling contests. Sumo wrestling is a sport that started in Japan. It takes place in a ring. Two players try to score points by holding each other down or pushing each other out of the ring. Robot sumo uses robots instead of humans. The robot that scores the most points wins. What is the main idea of this paragraph?
A.
Students need a good plan for defeating other robots.
B.
Students compete against their classmates and students from other schools.
C.
Students compete in robot sumo contests.
D.
Students must be creative to win.