Robert Is a Widower Raising 5 Year Old Twin Boys

Robert is a widower raising 5 year old twin boys. In 2013, after the plant where he had worked for 10 years shut down, he was able to obtain part-time work that paid him $13,000.00 a year. He receives the earned income tax credit. If Robert receives a raise, so that he will earn
$16,350, the earned income credit will be

A) reduced by 21 cents per dollar.
B) reduced by 25 cents per dollar.
C) phased out completely.
D) will not be reduced.