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: Surgery
Commonest type of ca gallbladder with gall stones is - 
Select and explain. 
A. Adenocarcinoma, B. Anaplastic carcinoma, C. Sq. cell carcinoma, D. Transitional cell ca
A: Adenocarcinoma
Answer: A: Adenocarcinoma 
Explanation: None