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
[{'content': 'Sections from a solid-cystic uniliateral ovarian tumor in a 30 year old female showed a tumor composed of diffuse sheets of small cells with doubtful nuclear grooving and scanty cytoplasm. No Call-Exner bodies are seen. The ideal immunohistochemistry panel would include: \nSelect and explain. \nA. Vimentin, epithelial membrane antigen, inhibin, CD99, B. Desmin, S-100 protein, smooth muscle antigen, cytokeratin, C. Chromogranin, CD45, CD99, CD20, D. CD =3, chromagranin, CD45, synaptophysin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: CD =3, chromagranin, CD45, synaptophysin', 'role': 'assistant'}]