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: It is completely oxidized in the citric acid cycle: 
 Options:  <1> -ketoglutarate. <2> Succinate <3> Citrate. <4> Acetyl-CoA. <5> Oxalacetate.
