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
Carriers of Salmonella typhi can be detected by ? 
Select and explain. 
A. Widal test, B. Blood culture, C. Sputum culture, D. Culture of feces
D: Culture of feces
Answer: D: Culture of feces 
Explanation: Ans. is 'd' i.e., Culture of feces . Identification of fecal carriers is by isolation of the bacillus from feces or from bile. . Identification of urinary carriers is by isolation of the bacillus from urine.