This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
All are features of anterior interosseous nerve (AIN) syndrome except NOT RELATED 
Select and explain. 
A. There is sensory loss on the medial 2 fingers, B. Inability to perform OK-sign (approximate thumb and tip of index finger), C. AIN is entrapped under pronator teres, flexor digitorum profundus, flexor carpi radialis, D. Conservative treatment generally, surgery rarely
A: There is sensory loss on the medial 2 fingers
Answer: A: There is sensory loss on the medial 2 fingers 
Explanation: There is sensory loss on the medial 2 fingersThere is no sensory impairment in anterior interossous nerve (AIN) syndrome.