Natalia is a few weeks pregnant when she begins to experience pain. Her doctor tells her that she is concerned Natalia may be experiencing an ectopic pregnancy and would like to perform an ultrasound to look for the embryo. Where should Natalia's doctor look?
A. In the endometrium of the lower half of the uterus
B. In the fallopian tubes
C. In the endometrium of the upper half of the uterus
D. Near the cervix
E. In none of these locations
Answer: B
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