The correct answer is C. A is subordinate of B.
Hyponymy is a semantic relation between two concepts in which one concept (the hyponym) is included in the extension of another concept (the hypernym). For example, the concept “dog” is a hyponym of the concept “animal”, because all dogs are animals.
The other options are incorrect. Option A is incorrect because it describes a part-whole relationship, not a hyponymy relationship. Option B is incorrect because it describes a whole-part relationship, not a hyponymy relationship. Option D is incorrect because it describes a superordinate-subordinate relationship, not a hyponymy relationship.