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
Annual growth rate is - 
Select and explain. 
A. Crude birth rate-crude death rates, B. Crude death-crude birth rates, C. Crude birth rate-crude death rate x 100/crude birth rate, D. Crude birth rate-crude death rate x 100/Mid year population
A: Crude birth rate-crude death rates
Answer: A: Crude birth rate-crude death rates 
Explanation: When crude death rate is subtracted from the crude birth rate, the net residual is the current annual growth rate, exclusive of migration.