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: Which of the following is not a fat-soluble vitamin ?: 
 Options:  <1> Vitamin A. <2> Vitamin C. <3> Vitamin D. <4> Vitamin E. <5> Vitamin K.
