How should material seasonal variations in revenue be reflected in interim financial statements?

  a. The seasonal nature should be disclosed, and the interim report should be supplemented with a report on the 12-month period ended at the interim date for both the current and preceding years.
  b. The seasonal nature should be disclosed, but no attempt should be made to reflect the effect of past seasonality on financial statements.
  c. The seasonal nature should be reflected by providing pro forma financial statements for the current interim period.
  d. No attempt should be made to reflect seasonality in interim financial statements.