Which of the following describes the connection between fairness and altruism? A. Researchers have determined that an understanding of altruism develops in children before an understanding of fairness. B. The more upset a person becomes in the face of unfairness, the more likely they are to act fairly and altruistically themselves. C. An understanding of fairness isn’t clearly connected to someone’s ability to understand altruism or act selflessly. D. An understanding of fairness and altruism are connected, but researchers are uncertain to the full extent of their connection.