Which Statement Below Best Describes the GAAP Hierarchy in State

Which statement below best describes the GAAP hierarchy in state and local government accounting?

A) Only GASB Statements are considered authoritative.
B) GASB Statements and AICPA Industry Audit and Accounting Guides are considered authoritative.
C) Only AICPA Industry Audit and Accounting Guides are considered authoritative.
D) GASB Statements, GASB Technical Bulletins, Implementation Guides, and GASB-approved AICPA literature are considered authoritative.