Q: 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'.
Question: The antitumor agent cis-platinum:
Options: <1> It is a flat square complex of Pt (II) with 2 molecules of ammonia and 2 chloride anions located in cis. <2> It is a flat square complex of Pt (IV) with 2 molecules of ammonia and 2 chloride anions located in cis. <3> It is an octahedral complex of Pt (IV) with 2 molecules of ammonia in cis and 4 chloride anions in the other positions. <4> It is an octahedral complex of Pt (II) with 2 chloride anions in cis and 4 ammonia molecules in the other positions. <5> It is an alkene with two Pt atoms in the two cis positions with respect to the double bond.
A:
1