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
[{'content': 'The size of the film used for lateral cephalogram: \nSelect and explain. \nA. 8x10 inch, B. 6x12 inch, C. 1.5x7 inch, D. 57x76 mm', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Size 0 – 22 x 35 - 1°dentition\nSize 1 – 24 x 40 – Anterior\nSize 2 – 31 x 41 – Adult\nNote: Size 1 and 2 is used\xa0for transitional dentition\n57 x 76 mm film – Occlusal view\n8 x 10 inch – Lateral cephalograms, PNS view\n6 x 12 inch – OPG\n1.5 x 7 inch – TMJ + Lateral oblique view', 'role': 'assistant'}]