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
Which of the following is an infective form of Ascaris? 
Select and explain. 
A. Coracidium, B. Filariform larvae, C. Rhabditiform larvae, D. Embryonated egg
D: Embryonated egg
Answer: D: Embryonated egg 
Explanation: Eggs are fertilized before release and embryonate to the second stage (larval stage) inside the egg, which is then ingested by a new host to start a new infection.