This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory, Subject name: Medicine
[{'content': 'Garland sign on CXR in sarcoidosis involves all except: \nSelect and explain. \nA. Right paratracheal nodes, B. Right hilar nodes, C. Left hilar nodes, D. Left pretracheal lymph nodes', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Left pretracheal lymph nodes o Bilateral hilar lymphadenopathy with right paratracheal nodal enlargement is classic for sarcoidosis and is referred to as the 1-2-3 sign or Garland triad.Garland's triad talso known as the 1-2-3 sign or Paw nbrokers sign! of Sarcoidosiso Right paratracheal nodeso Right hilar nodeso Left hilar nodes", 'role': 'assistant'}]