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: In humans, the synthesis of aspartate from oxaloacetate is catalysed by: 
 Options:  <1> Oxalacetate decarboxylase. <2> Aspartate synthetase. <3> Aspartate dehydrogenase. <4> Pyridoxal phosphate-dependent transaminase. <5> Oxalacetate ligase.
