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: Physiology
[{'content': 'A feilised ovum reaches the uterine cavity by the 7th day from ovulation. How long does it take for it to travel through the fallopian tube? \nSelect and explain. \nA. 3-4 days, B. 5-6 days, C. 7-8 days, D. 10 days', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The feilised ovum takes 3-4 days to travel through the fallopian tube and reaches the uterine cavity by the 7th day from ovulation. It is fully embedded in the endometrium by the 14th day.', 'role': 'assistant'}]