Task: SWRL-based Rule Reasoning (ontology: Food_Agriculture/Crop_Ontology)

Suppose an individual ?x satisfies: SdCampesterol M mgkg(?x). Which conclusion is one valid inferred conclusion?

A. Leaf Arsenic content(?x)
B. Variable(?x)
C. Seed Sodium content(?x)
D. Seed N content to total plant N content ratio(?x)

Answer: Variable(?x)