This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oncology, Subject name: Medicine
Which of the following is most common cancer leading to death? 
Select and explain. 
A. Lung cancer, B. Oral cancer, C. Skin cancer, D. Prostate cancer
A: Lung cancer
Answer: A: Lung cancer 
Explanation: Ans. (a) Lung cancerRef.-.Table 81.1 Harrison 18th EditionThe most common cancer in the world is lung cancer, and it is the most common cause of cancer related death.