Musto Observed Which of the Following Trends Among Children on Mixed-Gender

Musto observed which of the following trends among children on mixed-gender competitive swim teams.

A) Swimmers in the most elite group discussed their own and others' athleticism rather than gender differences during structured practice time.
B) Swimmers in the most elite group discussed gender differences but not gender hierarchies during unstructured time.
C) Swimmers in the less advanced groups discussed gender difference during structured and unstructured practice time.
D) All of the above are true.