Which One of the Following Examples Illustrates Vicarious Reinforcement

Which one of the following examples illustrates vicarious reinforcement?

A) Alicia notices that her friend Elle gets extra attention from the teacher when she acts helpless.Alicia begins to act helpless as well.
B) Brandon knows that he will get a higher grade if he turns in a research paper that is typed rather than handwritten, but he turns in a handwritten paper anyway.
C) Avril sees her friend Martha scolded for chewing gum in class.She quickly takes her own gum out of her mouth.
D) Winston sees how Michael gets good grades when he works hard on his mathematics homework, but Winston does not want to work that hard.