This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Who is regraded as father of public health? 
Select and explain. 
A. Louis pasture, B. Cholera, C. John snow, D. Robe Koch
B: Cholera
Answer: B: Cholera 
Explanation: Cholera which is often called "father of public health " appeared time and again in western world during 19th century Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no.5