This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
MMR is expressed in 
Select and explain. 
A. Per 1,000 live bih, B. Per 10,000 live bih, C. Per Lac live bih, D. Per 10 Lac live Bih
C: Per Lac live bih
Answer: C: Per Lac live bih 
Explanation: Maternal moality ratio(Total no of female deaths due to complications of pregnancy, childbih or within 42 days of delivery from puerperal causes in an area during a given year / Total no of live bihs in the same area and year) x 1000Maternal moality ratio: Number of maternal deaths during a given time period per 100,000 live bihs during the same time period (Refer: K. Park's Textbook of Preventive and Social Medicine, 24th edition, pg no: 593 )