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
A 65-year-old chronic smoker presented with a central lung mass with distal bronchiectasis and recurrent pneumonia. A greyish white tumor was resected. Which of the following histopathological finding is most likely to be seen? 
Select and explain. 
A. Small cells with scant cytoplasm, ill-defined borders and hyperchromatic nuclei with nuclear moulding, B. Derivatives of all three germ layers are seen, C. Tall columnar cells with cytoplasmic and intraalveolar mucin, D. Palisading or rosette-like arrangement of cells separated by abundant fibrovascular stroma
A: Small cells with scant cytoplasm, ill-defined borders and hyperchromatic nuclei with nuclear moulding
Answer: A: Small cells with scant cytoplasm, ill-defined borders and hyperchromatic nuclei with nuclear moulding 
Explanation: Ans. a. Small cells with scant cytoplasm, ill-defined borders and hyperchromatic nuclei with nuclear moulding