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

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

A. independent continuant
B. alkali metal molecular entity
C. gas molecular entity
D. regulation of membrane potential

Answer: independent continuant