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: Gynaecology & Obstetrics
Pressure of normal uterine contractions is between 190-300. Units in terms of which units. 
Select and explain. 
A. Montevideo units, B. Mm of Hg, C. Cm of water, D. Joules/kg
A: Montevideo units
Answer: A: Montevideo units 
Explanation: 1 montevideo unit = Intensity of constraction x number of contractions in 10 mins.
Montevideo unit is to define uterine activity.
As per this:
Clinical labour usually commences when uterine activity reaches values between 80-120 Montevideo units (This translates into approximate 3 contractions of 40 mm of Hg every 10 minutes).
During labour – Normal uterine contractions are between 190 – 300 Montevideo units (At the time of delivery it is 300 Montevideo units)
Extra Edge

Uerine contractions are clinically palpable only after their intensity exceeds > 10 mm of Hg
Uterine contractions are not associated with pain unless their intensity is > 15 mm of Hg.