单选题 Read the text and then answer the question according to the text.More than 40 years of research indicates that viewing violence via entertainment media can lead to increases in aggressive attitudes, values, and behavior, particularly in children. According to the American Psychological Association, there are four long-term effects of viewing violence. These are increased aggressive and anti-social attitudes and behavior, increased fears of being or becoming a victim, becoming less sensitive to violence and victims of violence, and a greater appetite for more and more violence in entertainment and real life.Question: According to the American Psychological Association, the long-term effects of viewing violence are ( )