Assertion (A): The Gandhara School of art bears the mark of Hellenistic influence. Reason (R): Hinayana form was influenced by that art.

The correct answer is C because Assertion A is true while Reason R is false. Assertion A is true because the Gandhara School of art developed in the northwestern part of the Indian subcontinent and was heavily influenced by Greek and Roman styles, often referred to as Graeco-Buddhist art. It used Hellenistic elements such as muscular bodies and wavy hair to depict Indian subjects. Reason R is false because the Gandhara School of art was primarily associated with the Mahayana form of Buddhism, not Hinayana. Mahayana Buddhism encouraged the worship of the Buddha in physical human form, which led to the creation of these statues. In contrast, the Hinayana form strictly avoided idol worship and represented the Buddha only through symbols like footprints or a vacant throne. Therefore, the reason provided is factually incorrect.