This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Robotics, Laparoscopy and Bariatric Surgery, Subject name: Surgery
What is the name of most commonly used robot used for the given surgery? 
Select and explain. 
A. PUMA 560, B. DaVinci robot, C. PROBOT, D. ROBODOC
B: DaVinci robot
Answer: B: DaVinci robot 
Explanation: DA-Vinci ROBOT - Most commonly world-wide used - Based on Master Slave principle - Surgeon inses hand into master a Translate the motion of his hands into motions of robotic arma Hand like instruments Indications Prostatectomy Cardiac valve repair Gynecological operation