This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Pressure of normal uterine contractions between 190-300 unit. Which unit is being referred to here? \nSelect and explain. \nA. Montevideo units, B. mmHg, C. cm of water, D. Joules/kg', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Montevideo units are used to define uterine activity. this is not very popular.TEXTBOOK OF OBSTETRICS, SHEILA BALAKRISHNAN,2nd edition, pg no:356', 'role': 'assistant'}]