Sean and Jenny are married, file a joint return and have two dependent children, Blake, age 9 and Jake, age 5. Sean has earned income of $72,000. Jenny was a full-time student (for nine months) with no income. They paid a qualified day care center $7,000. What amount of child and dependent care credit can Sean and Jenny receive?
a. $600.
b. $900.
c. $1,000.
d. $1,200.