This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Development period- week 1,2,3,4, Subject name: Anatomy
The epiblast is capable of forming which of the following germ layers? 
Select and explain. 
A. Ectoderm only, B. Ectoderm and mesoderm only, C. Ectoderm and endoderm only, D. Ectoderm, mesoderm, endoderm
D: Ectoderm, mesoderm, endoderm
Answer: D: Ectoderm, mesoderm, endoderm 
Explanation: The epiblast is capable of forming all three germ layers (ectoderm, mesoderm, and endoderm) during gastrulation week 3 of development .