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

Which of the following definitions best describes '(5Z)-5-octenoic acid'?

A. Any polyunsaturated fatty acid that contains three double bonds.
B. Any straight-chain, C18 polyunsaturated fatty acid having two C=C double bonds.
C. A hydroxy polyunsaturated fatty acid that is (2E,4E,8Z)-tetradeca-2,4,8-trienoic acid which is carrying a hydroxy group at the 6R-position.
D. An olefinic fatty acid that is octanoic acid carrying a double bond at position 5 (the 5Z-isomer).

Answer: An olefinic fatty acid that is octanoic acid carrying a double bond at position 5 (the 5Z-isomer).