Benjamin and Ester File a Joint Return and Have AGI

Benjamin and Ester file a joint return and have AGI of $165,000. Both are active participants in their employer's pension plan. They have one child, Emily, who is age 8. Emily's grandparents contributed $1,000 to a Coverdell Education Savings Account for Emily in 2015. What is the maximum permitted Coverdell Education Savings Account contribution that Benjamin and Ester can make in 2015?

A) $0.
B) $1,000.
C) $2,000.
D) $5,500.