What Best Describes the Relationship of the FASB and the GASB

What best describes the relationship of the FASB and the GASB?

A) They are co-equal bodies with different areas of responsibility for standards setting.
B) The FASB standards are authoritative for governments. However, the GASB can establish additional standards that do not conflict with FASB standards.
C) GASB standards are authoritative for all government operations except those that are similar to business operations.
D) Governments are not permitted to apply any FASB standard under any circumstances for any government operations.