This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Which of the following is most resistant to antiseptics 
Select and explain. 
A. Prion, B. Spore, C. Fungus, D. Cyst
A: Prion
Answer: A: Prion 
Explanation: Capsules may be readily demonstrated by negative staing in wet films with India ink , when they are seen as clear halos around the bacteria aganist a black background Ref :Ananthanarayan & paniker's Textbook of microbiology 9th edition pg no 18