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: Consider Input: Question: Aspirin is an inhibitor of the synthesis of: 
 Options:  <1> Sterols <2> Prostaglandins <3> Phosphoacylglycerides. <4> Arachidonic acid. <5> Glycerophospholipids.

Output: 2


Input: Consider Input: Question: Acetyl-CoA: 
 Options:  <1> It is synthesized from pyruvate in the eukaryotic cytoplasm. <2> It has a phosphate bond rich in energy. <3> Presents a guanine nucleotide in coenzyme A. <4> Activates pyruvate carboxylase and inhibits pyruvate dehydrogenase. <5> It easily crosses the mitochondrial inner membrane.

Output: 4


Input: Consider Input: Question: The determination of fecal occult blood is useful when there is a suspicion of: 
 Options:  <1> Anemia due to iron deficiency. <2> Biliary cholestasis. <3> Helicobacter pylori infection. <4> Colon carcinoma <5> Celiac Disease.


Output: 4