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
All of the following statements about leptospirosis are true except - 
Select and explain. 
A. Infection acquired by direct contact with infected urine, B. Mortality is 5-15% in severe cases, C. Antibodies are usually detectable in the first week, D. IV penicillin is recommended for treatment of severe cases
C: Antibodies are usually detectable in the first week
Answer: C: Antibodies are usually detectable in the first week 
Explanation: None