Task: Inferred Instance Class Reasoning (ontology: Sciences/Computer_Science)

After reasoning over the ontology, which class is one valid inferred class for the instance 'pH'? Context: A dimensionless concentration notation which denotes the acidity of a solution in terms of activity of hydrogen ions (H+).

A. clause
B. measurement unit label
C. Clustered data set
D. Digital gene expression (DGE) datasets

Answer: measurement unit label