Final answer:
The false statement regarding the accounting for pensions under IFRS and U.S. GAAP is option (b).
Step-by-step explanation:
The false statement regarding the accounting for pensions under IFRS and U.S. GAAP is option (b). Under U.S. GAAP, companies are required to amortize actuarial gains and losses over the average remaining service lives of employees, not the expected service lives. Whereas under IFRS, companies have the option to either amortize these gains and losses over employees' expected remaining service lives or recognize them in income immediately.