Lee and Whitney Incurred Qualified Adoption Expenses in 2015 of $2,000,and

Lee and Whitney incurred qualified adoption expenses in 2015 of $2,000,and then incurred $7,000 more in 2016 when the adoption of their child became final.Their 2015 AGI was $120,000 and their 2016 AGI was $140,000.The allowable adoption credit is

A) $ 7,000 in 2016.
B) $ 9,000 in 2016.
C) $13,460 in 2015.
D) $2,000 in 2015 and $7,000 in 2016.