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: Social & Preventive Medicine
A 32 year old person comes to the hospital after 2 weeks of the onset of diarrhoea. Diagnosis of typhoid can be confirmed with 
Select and explain. 
A. Urine culture, B. Stool culture, C. Blood culture, D. Widal test
D: Widal test
Answer: D: Widal test 
Explanation: Diagnosis done in

1st week - Blood culture
2nd week - Widal / Antibodies level
2rd week - Stool culture
4th week - Urine culture