The Australian government has opened a for-profit tourist information center in New York City. If a dispute arises over the lease of the storefront, may the landlord sue the Australian government in the United States courts?

a. Yes, because the Australian government was engaged in a commercial activity.
b. No, because the Foreign Sovereign Immunities Act forbids U. S. courts from hearing any case (without exception) that involves a foreign government.
c. No, because the only way the Australian government can be sued is if it signed a written waiver of immunity.
d. Yes, because the Australian government violated international law.