Final answer:
The AIS is viewed as a subsystem of the IS, meaning that an Accounting Information System is a specialized part of the broader Information System within an organization.
Step-by-step explanation:
The relationship between an Information System (IS) and an Accounting Information System (AIS) views the AIS as a subsystem of IS. This means that answer A in the student's question is correct: the AIS is part of the IS. While an Information System addresses the broader aspects of information management and technology in an organization, an Accounting Information System is specifically designed to support accounting and financial activities. Therefore, an AIS is a specialized department within the larger framework of an organization's IS.