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: Microbiology
Definitive host is one -a) In which sexual multiplication takes placeb) In which asexual multiplication takes placec) Harbors adult formd) Harbors larval form 
Select and explain. 
A. ac, B. bc, C. ad, D. b
A: ac
Answer: A: ac 
Explanation: None