While on duty at a federal facility you attempt to detain a subject who you observed urinating in an unused doorway of your facility. As you approach the subject, he turns and walks away from you. You yell at the subject and say, "Stop! Police!" and he complied. You gather all the subjects' information and notify the Mega-Center for an FPS response. As a result of this incident _________.
A. You have committed a crime
B. You made a lawful arrest
C. You should receive a promotion
D. You fulfilled your obligations to stop the act