This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis in Obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Cord compression leads to: \nSelect and explain. \nA. Late deceleration, B. Early deceleration, C. Variable deceleration, D. Acceleration', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) Variable decelerationRef. Dutta's Obstetrics, Th ed./612* Deceleration is transient decrease in FHR below the baseline by 15 bpm or more and lasting for more than or equal to 15 secs.* Three basic type of deceleration are observed:# Early Deceleration: due to head compression# Late deceleration: uteroplacental insufficiency and fetal hypoxia# Variable deceleration: cord compression (MC type)", 'role': 'assistant'}]