This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
Which is the nerve passing through medial epicondyle? 
Select and explain. 
A. Ulnar, B. Radial, C. Median, D. Posterior interosseus
A: Ulnar
Answer: A: Ulnar 
Explanation: Ans. A UlnarRef: BDC 6th ed. vol. I pg. 93; Gray, 822, 29, 37* Nerve passing through medial epicondyle is ulnar nerve. Very often when we hit our elbow on any surface, the current like feeling in arm, is due to ulnar nerve injury.* Medial epicondyle fracture causes injury to ulnar nerve.# Ulnar nerve palsy causes partial claw hand.# Claw hand-sensory loss of medial 11/2 digits.# Weakness of grip (paralysis of intrinsic muscle)# Loss of flexion of MCP (lumbricals and interossei)# Loss of adduction of thumb