Task: Property Constraint Reasoning (ontology: Sciences/Biology)

The property 'located in' applies to instances of 'independent continuant', and 'melatonin' is a subclass of 'independent continuant'. Which class can appear as the value of 'located in' for instances of 'melatonin'?

A. anatomical line
B. specifically dependent continuant
C. obsolete oocyte stage IV
D. independent continuant

Answer: independent continuant