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': 'Embossed pattern in radiograph is due to: \nSelect and explain. \nA. Static electricity, B. Lead foil side of the film kept towards the tube, C. Both 1 and 2, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Herring bone pattern is also known as Embossed pattern.', 'role': 'assistant'}]