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

The property 'is alternative format of' applies to instances of 'data format specification', and 'gmt format' is a subclass of 'data format specification'. Which class can appear as the value of 'is alternative format of' for instances of 'gmt format'?

A. application programming interface
B. HTML report
C. FACS data
D. data format specification

Answer: data format specification