This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: obstetrics,pediatrics and geriatrics, Subject name: Social & Preventive Medicine
Denominator of maternal moality ratio is - 
Select and explain. 
A. 1000 total bihs, B. Mid year population, C. 1000 live bihs, D. Total live bihs
D: Total live bihs
Answer: D: Total live bihs 
Explanation: maternal moality ratio = Total number of female deaths due to complications of pregnancy, child bih or within 42 days of delivery from puerpural causes in an area during a given year Divided by Total number of live bihs in the same area and year X 1000 or 100000 Reference Park&;s textbook of preventive and social medicine 23rd edition pg 557