(a) The requirement is to identify the correct statement
regarding the use of the revaluation model. Answer (a) is correct
because when an asset is revalued, the entire class must be revalued.
Answer (b) is incorrect because the entire class must be
revalued. Answer (c) is incorrect because there are no rules regarding
the frequency of revaluation. Answer (d) is incorrect
because the revaluation surplus is presented in other comprehensive
income, not profit or loss.