A bat is found in the bedroom of a 4-year-old patient while the boy is sleeping. The family and the patient deny close contact with or bites from the bat. Which of the following is a correct statement regarding this situation?
a) Rabies prophylaxis is not necessary.
b) Observation of the bat for 24 hours is sufficient.
c) Rabies prophylaxis is indicated if the bat tests negative for rabies.
d) Rabies prophylaxis is indicated without waiting for bat testing.