Detailed Instructions: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Q: Question: The most common ectopic pregnancy occurs in: 
 Options:  <1> The fallopian tube. <2> The oviductal tube. <3> The cervix <4> The ovary <5> The abdomen.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
1