Which sentence most likely describes the conflict in a story?

A. Maria met Karina on the second day of middle school, when Karina fell in gym class.

B. Maria and Karina believe that they will be best friends forever, or at least through high school.

C. Maria thought Karina was her best friend, but lately Karina has been avoiding her.

D. Maria convinced Karina to meet her at a mutual friend's house, where they worked things out.