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

Which of the following definitions best describes '(9Z)-18-hydroxyoctadec-9-enoate 18-O-sophoroside'?

A. A monounsaturated fatty acid anion resulting from the deprotonation of the carboxy group of (9Z)-18-hydroxyoctadec-9-enoic acid 18-O-sophoroside. The major species at pH 7.3
B. Any monounsaturated fatty acid carrying one or more hydroxy substituents.
C. An acetylenic fatty acid that is octadecanoi acid (stearic acid) which has been doubly dehydrogenated at positions 17 and 18 to give the corresponding alkynoic acid.
D. An epoxy fatty acid obtained by formal epoxidation of one of the double bonds of any octadecadienoic acid.

Answer: A monounsaturated fatty acid anion resulting from the deprotonation of the carboxy group of (9Z)-18-hydroxyoctadec-9-enoic acid 18-O-sophoroside. The major species at pH 7.3