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
Serial extraction is contraindicated in all of the following except 
Select and explain. 
A. Canine impaction, B. Missing premolars, C. Class II Div I malocclusion, D. Crowding of deciduous dentition
D: Crowding of deciduous dentition
Answer: D: Crowding of deciduous dentition 
Explanation: None