US GAAP and IFRS differ on treatment of impairment of tangible assets as follows:
A. IFRS, tangible assets are tested only when factors suggest impairment.
B. US GAAP, tangible assets are tested only when factors suggest impairment.
C. Under IFRS, tangible assets are tested annually.
D. There is no difference between US GAAP and the IFRS on this subject.