Which of the Following Best Exemplifies Social Referencing

Which of the following best exemplifies social referencing?

A) Tom's father scolds Tom for being angry at his sister.
B) Tom's father uses a light mood and a smile to transition Tom from an angry state to a calmer one.
C) Tom's mother shows Tom pictures of different emotional expressions so that he can learn to imitate them.
D) Tom's mother takes him away from his friends when he becomes angry at one of them for taking his toy.