Jayden waited anxiously as the judges made their final decision. For weeks, he'd been working on an experiment that showed how music helps rats learn to escape from a tunnel. Jayden's twin sister, Janice, was also in the running for a ribbon. Her project showed how wind energy can be used to power homes. Janice had won first prize at the science fair the last two years in a row. Jayden wanted his sister to do well, but he wanted to be the one to take home the blue ribbon this year. Time stood still as he waited for the judges' ruling. Finally, they walked over to Jayden's booth and placed a blue ribbon on his experiment. Jayden couldn't believe it! A few moments later, Janice came over and gave her brother a big hug to congratulate him.

The main conflict of the story can be described as
A) person against self.
B) person against person.
C) person against nature.
D) person against technology.​