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: Pathology
Chronic smoker develops cough, hemoptysis. Doctor tells him that he is having most malignant type of bronchogenic carcinoma. The type is - 
Select and explain. 
A. Squamous, B. Small cell, C. Large cell, D. Adenomatous
B: Small cell
Answer: B: Small cell 
Explanation: Most malignant tumor of lung is small cell carcinoma and it is strongly associated with smoking.