LIFO retrospective?

Under GAAP when company changes from FIFO to LIFO or vica versa, do they need to REISSUE (retrospectively) past financial statements?

I thought they did but a Schweser practice question said it’s an exception to the rule. I’m confused.

For change from LIFO to another method , US GAAP require a retrospective restatement of inventory and retained earnings. But if co decides change to LIFO method then retrospective adjustments are not made to financial statements.

Oh I see, thanks for clarifying