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: Unknown
Corona Radiata of ovum is formed from - 
Select and explain. 
A. Cumulus ovaricus, B. Zona pellucida, C. Formative yolk, D. Follicular cells
D: Follicular cells
Answer: D: Follicular cells 
Explanation: Ans - D