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
Which of the following tumor arise from the mesenchymal portion of the tooth germ, either from dental papilla,the follicle or the PDL: 
Select and explain. 
A. Odontogenic myxoma., B. Adenomatoid odontogenic tumor., C. Pindborg tumor., D. Ameloblastoma
A: Odontogenic myxoma.
Answer: A: Odontogenic myxoma. 
Explanation: None