Jeff and Jill finalized the adoption of their 4-year-old child during the tax year. Some of the costs incurred throughout the year were $2,500 paid to the licensed California adoption agency, $1,000 in medical expenses paid before finalizing the adoption, and $500 for a visit to Disneyland to get to know the child. What amount of Adoption Tax Credit can Jeff and Jill claim on their California return? 

a) $2,000 

b) $2,500 

c) $4,000 

d) $1,750