Task: Question Answering
Input (English): Question: The arginosuccinasa: 
 Options:  <1> In an enzyme of the citric acid cycle. <2> Converts arginine to lysine. <3> It is activated by the allosteric effector N-acetylglutamate. <4> It produces fumarate. <5> It is a glycogenic amino acid.
Output (English): 4