Mrs Serio Enrolled Her Son in a Mathlete Competition at Their

Mrs. Serio enrolled her son in a mathlete competition at their local elementary school. Her daughter wanted to participate as well, but Mrs. Serio placed her in the reading Olympics instead, saying this would be a better fit for her. What might help explain Mrs. Serio's decision?

A) Girls are naturally better at language tasks, so she is playing to her daughter's potential advantage.
B) Many parents have stereotypes leading to over-estimating boys' math skills and underestimating girls' math skills.
C) Mrs. Serio misinterpreted research that actually shows greater math ability in girls than boys.
D) Mrs. Serio was likely displaying gender bias against her own in-group.
E) All of the above are true.