Which statement concerning revaluations that reverse prior adjustments in value is untrue?

	a.	A revaluation decrease that reverses a previous increase should be recognised as a decrease in other comprehensive income to the extent of any credit balance existing in the revaluation surplus reserve account.
	b.	When a change in valuation is a reversal of a previous revaluation, accumulated depreciation does not have to be written off against the asset before the revaluation is recorded.
	c.	A revaluation decrease that reverses a previous decrease should be recognised in the income statement to the extent that it reverses any previously downward revaluation of the same asset.
	d.	A debit to a revaluation surplus reserve account that is a reversal of a previous revaluation increase should not exceed the amount of the original credit.