When Trying to Explain the Concepts of "Fruit" and "Vegetable

Multiple Choice

When trying to explain the concepts of "fruit" and "vegetable," we may say "That potato is not a fruit, it is a vegetable." In this example

A) potato is a positive exemplar of the prototype fruit.
B) potato is a negative exemplar of the prototype vegetable.
C) potato is both a negative and a positive exemplar, depending upon the prototype considered.
D) none of these.