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: Anaphase A is characterized by the shortening of microtubules: 
 Options:  <1> Kinetochore <2> Polar <3> Interpolar <4> Astral <5> Longitudinal
