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
Lalloo, a 13-year old child has a severe thumb-sucking habit. On examination he has a Class-II malocclusion, anterior open bite with an over-jet of 12mm. His cephalogram will show: 
Select and explain. 
A. Normal anterior and posterior facial heights, B. Increased anterior facial height and normal	posterior facial height, C. Increased posterior facial height and normal anterior facial height, D. Increased posterior facial height and increased anterior facial height
B: Increased anterior facial height and normal	posterior facial height
Answer: B: Increased anterior facial height and normal	posterior facial height 
Explanation: None