This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
[{'content': 'The first epiphyseal centers appears in(6-G) \nSelect and explain. \nA. Oscalcis, B. Clavicle, C. Femur, D. Cuboid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Oscalcis): Ref: 6 -G (1. -Ghai 7th)* The earliest epiphyseal centers to appear are those for the oscalics and talus bones (22 to 26 weeks of gestation)* The distalepiphysis of the femur and the proximal epiphysis of tibia are usually present in a full term normal newborn at the time of birth* Clavicle, manible and the membranous bones of the skull are the first fetal bones to ossify usually between 50 days and 5 months of gestations.* Cuboid (37 weeks of gestation of 8 weeks postnately)', 'role': 'assistant'}]