Definition: 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'.
Input: Question: The blastocyst is detached from the zona pellucida in: 
 Options:  <1> The ovary <2> The fallopian tube. <3> Oviductal tube. <4> The uterus. <5> The vagina
