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: Pathology
Ectodermal dysplasia manifested as: 
Select and explain. 
A. Hypohidrosis., B. Hypotrichosis., C. Hypodontia., D. All of the above.
D: All of the above.
Answer: D: All of the above. 
Explanation: Ectodermal dysplasia is characterized by congenital dysplasia of ectodermal structures, manifested as hypohidrosis (partial or complete absence of sweat glands) hypotrichosis and hypodontia or partial anodontia.