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
Piebaldism refers to – 
Select and explain. 
A. Androgenetic alopecia, B. Erythema nodosum leprosum, C. Associated with white forelock, D. None of the above
C: Associated with white forelock
Answer: C: Associated with white forelock 
Explanation: Piebaldism is a hypopigmented disorder which is present since birth and is characterized by congenital white forelock and hypopigmented or depigmented macules on the central part of the forehead, ventral trunk, and upper & lower extremities. Involvement is bilaterally symmetrical.