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
A boy got unprovoked bite from a neighbour's dog. The animal control authority caught the dog and it was found to be healthy. What will be the next step? 
Select and explain. 
A. Test antibody level in the dog, B. With hold immunization and observe the dog for 10 days for signs of rabies, C. Sta post-exposure prophylaxis, D. Perform euthanasia for the dog
B: With hold immunization and observe the dog for 10 days for signs of rabies
Answer: B: With hold immunization and observe the dog for 10 days for signs of rabies 
Explanation: Ans. (b) With hold immunization and observe the dog for 10 days for signs of rabies