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: Dental
A tight grasp by the operator on the explorer will 
Select and explain. 
A. Prevent tactile sensitivity, B. Provide greater maneuverability, C. Prevent muscle fatigue of the fingers, D. All the above
A: Prevent tactile sensitivity
Answer: A: Prevent tactile sensitivity 
Explanation: None