Task: Class Relation Understanding (ontology: Sciences/Biology)

Which of the following classes is one valid superclass of 'pentalenolactone metabolic process'?

A. monocarboxylic acid metabolic process
B. 1-alkylglycerophosphocholine O-acetyltransferase activity
C. 13-hydroxydocosanoate 13-beta-glucosyltransferase activity
D. (R)-lactaldehyde dehydrogenase activity

Answer: monocarboxylic acid metabolic process