This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
A  19 year old boy underwent a trauma, he visits the clinic with swollen lip and fractured maxillary central incisors. The encircled area in radiograph shows: 
Select and explain. 
A. Fragment of the fractured tooth, B. Calculus in the salivary duct, C. Irritational calcinosis of the lips, D. None of the above
A: Fragment of the fractured tooth
Answer: A: Fragment of the fractured tooth 
Explanation: None