[单选题]
The convergence of global accounting standards has advanced to a degree that the Securities & Exchange Commission in the United States now mandates that foreign private issuers who use IFRS may report under:
A.U.S. GAAP or under IFRS with a reconciliation to U.S. GAAP.
B.U.S. GAAP or under IFRS.
C.U.S. GAAP with voluntary supplemental reporting under IFRS.