This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Anatomy
Which is not a type of epiphysis? 
Select and explain. 
A. Traction, B. Atavistic, C. Friction, D. Pressure
C: Friction
Answer: C: Friction 
Explanation: ANSWER: (C) FrictionREF: Human osteology by BDC 1st edition page 5-6EpiphysisDefinition/ FunctionExamplePressure epiphysesTakes part in transmission of weightHead of femur , condyles of tibia , lower end of radiusTraction epiphysesProvide attachment to more than 1 tendonTrochanter of femur, tubercles of humerus, mastoid process.Atavistic epiphysesPhylogenetically an independent bone which in man becomes fused to another boneCoracoid process of scapula, posterior tubercle of talus, ostrigonum.Aberrant epiphysesNot always presentHead of metacarpal, base of other metacarpal