Task: Text Categorization
Input (English): Question: In the β-oxidation of odd-chain fatty acids, what is the molecule that forms with the last three carbons to enter the citric acid cycle ?: 
 Options:  <0> Propionyl-CoA. <1> Methylmalonyl-CoA. <2> Succinyl-CoA. <3> Succinate <4> Malate.
Output (English): chemistry