Which of the Following Statements Regarding Net Operating Losses Is

Which of the following statements regarding net operating losses is true?

A) Corporations can carry net operating losses back two years and forward up to 15 years.
B) A corporation may elect to forgo carrying a net operating loss back and instead carry it over to future years.
C) When a corporation applies a net operating loss carryover, it reports a favorable, permanent book-tax difference in the amount of the applied carryover.
D) Marginal tax rates are irrelevant in determining the tax benefit of applying a net operating loss carryback or carryover.
E) None of these is a true statement.