Which aspect of social interaction best explains the study's findings related to BMI classification?
A.Primary versus secondary group ties
B.In-group versus out-group associations
C.Front-stage versus back-stage presentations
D.Role-taking versus impression management
Passage: "Strong implicit anti-obesity bias was found among MDs with an underweight, normal weight, and overweight BMI classification. Among MDs with an obese BMI classification, implicit anti-obesity bias was moderate."