This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fertilization and Development of Embryo, Subject name: Anatomy
Outer cell mass gives rise to? 
Select and explain. 
A. Embryo proper, B. Trophoblast, C. Syncytiotriophoblast, D. None
B: Trophoblast
Answer: B: Trophoblast 
Explanation: Ans. (b) TrophoblastRef: Longman's embryology 10th ed., p 38, Longman's medical embryology 12th / 37-40