Autonomous zone of ulnar nerve: (A) Tip of middle finger, (B) Tip of little finger, (C) Dorsum of 1st web space in hand, (D) Base of middle finger
Answer is B. Autonomous zones of nerve 
Ulnar Nerve - Tip of little finger 
Median Nerve - Tip of index, middle finger
Radial Nerve - 1st web space on dorsum of hand 
Deep Peroneal Nerve - 1st web space on dorsum of foot