Which of the Following Children Is Engaging in Social Comparison

Which of the following children is engaging in social comparison?

A) Florrie, who observes that she is better at singing than her peers but does not run as fast
B) Clark, who understands that his friend is upset because he received a poor grade
C) Astra, who describes herself as talkative and fun-loving, but also as a hard worker
D) Julien, who attributes his successful basketball dribbling skills to ability