This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of disease causation, Subject name: Social & Preventive Medicine
In iceberg phenomenon, the submerged part represents 
Select and explain. 
A. Undiagnosed cases in community, B. Diagnosed cases in community, C. Clinial cases that physician sees, D. Clinical cases that investigator sees
A: Undiagnosed cases in community
Answer: A: Undiagnosed cases in community 
Explanation: Ans. (a) Undiagnosed cases in communityRef : K. Park 23rd ed. /39, 135; K. Park 21s,ed. /37