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
Cephalometrics was introduced by: 
Select and explain. 
A. Margolis and William Wilson in 1925, B. Tweed and Mills in 1940, C. Bjork and sassouni in 1995, D. Broadbent and Hoftath in 1932
D: Broadbent and Hoftath in 1932
Answer: D: Broadbent and Hoftath in 1932 
Explanation: None