This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiration, Subject name: Pathology
[{'content': 'Clara cells are seen in: \nSelect and explain. \nA. Bronchoalveolar cell Ca, B. Small cell Ca, C. Squamous cell Ca, D. Non small cell Ca', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a (Bronchoalveolar cell Ca) Ref: Robbins, 7th ed, p. 761Clara cells are seen in bronchoalveolar carcinomaBronchoalveolar cell Ca1 -9% of lung tumoursAffect terminal bronchoalveolar regionsGrowth pattern is referred to as "Lepdic"Types:Non mucinous - Columnar, peg shaped or cuboidal cellsMucinous - Distinct columnar with cytoplasmic & intra-alveolar mucinAerogenous spread presentG/A: Single or multiple nodules coalescing to form pneumonia like consolidationM/E: Mucin secreting bronchoalveolar cellsClara cellsType II pneumocytes.', 'role': 'assistant'}]