This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Preventive Medicine in Obstetrics, Paediatrics & Geriatrics, Subject name: Social & Preventive Medicine
Phase 3 is 
Select and explain. 
A. High Stationary Stage, B. Late expanding stage, C. Low Stationary stage, D. Early expanding stage
B: Late expanding stage
Answer: B: Late expanding stage 
Explanation: Demographic cycle based on CBR & CDR Demographic cycle CBR CDR 1st stage High stationary High High 2nd stage Early expanding High Sta decreasing 3rd stage Late expanding Sta decreasing Already decreasing 4th stage Low stationary Low Low 5th stage Decline CDR > CBR