In 2013, due to a change in marketing forecasts, Barney Corporation reduced the projected life of its patent for producing round dice. The cumulative patent amortization prior to 2013 would have been $10 million higher had the new life been used. Barney's tax rate is 30%. Barney's retained earnings as of December 31, 2013, would be:
a) Overstated by $10 million.
b) Unaffected.
c) Overstated by $7 million.
d) incorrect Overstated by $3 million.