instruction:
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:
Question: Ferrous oxide, known as wustite (FeO) is non-stoichiometric because it contains: 
 Options:  <1> Excess iron <2> Oxygen excess <3> Iron defect. <4> Oxygen defect. <5> Defect of iron and oxygen.
answer:
3


question:
Question: What is the main risk factor in the appearance of ischemic or hemorrhagic ICTUS? 
 Options:  <1> Cardiopathy <2> Mellitus diabetes. <3> Hyperlipidemia <4> Arterial hypertension. <5> Obesity.
answer:
4


question:
Question: Retrograde amnesia is defined as: 
 Options:  <1> Memory loss that covers the period before the onset of the disorder that gave rise to amnesia. <2> Memory loss that covers the period following the onset of the disorder that gave rise to the amnesia. <3> Partial loss of memory that covers a specific period. <4> Memory loss in the absence of an organic brain disorder. <5> Distortions or memory errors.
answer:

1