Task: Property Constraint Reasoning (ontology: Earth_Environment/OBOE)

The property 'has qualifier' applies to instances of 'Measured Characteristic', and 'Irradiance' is a subclass of 'Measured Characteristic'. Which class can appear as the value of 'has qualifier' for instances of 'Irradiance'?

A. Unit Conversion
B. Characteristic Qualifier
C. Measurement Value
D. Protocol

Answer: Characteristic Qualifier