Task: SWRL-based Rule Reasoning (ontology: Earth_Environment/EnvironmentOntology)

Suppose an individual ?x satisfies: polysaccharide derivative(?x). Which conclusion is one valid inferred conclusion?

A. polysaccharide(?x)
B. carbohydrate(?x)
C. carbohydrate derivative(?x)
D. glycan(?x)

Answer: glycan(?x)