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'.

Question: With respect to the behavior of obstetric patients exposed to Varicella, it is FALSE: 
 Options:  <1> Infected women should be separated from other obstetric patients. <2> All obstetric patients exposed, without certainty of prior immunity, must make a serological determination of their immunization status. <3> Specific immunoglobulin should be administered to exposed non-immune obstetric patients. <4> The maximum period for administering the specific immunoglobulin after contact is 96 hours. <5> Pregnant women without immunity to Varicella-Zoster virus can be vaccinated during pregnancy to prevent primary infection.

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
5