An unmarried individual paid $6,500 in qualified adoption expenses to a an adoption agency for the final adoption of an eligible child who is not a child with special needs. In the same year, the individual's employer, under a qualified adoption assistance program, pays an additional $4,000 for other qualified adoption expenses to an attorney on behalf of this TP for the adoption of the child. Assuming TP is not subject to the phase-out, how much of the $4,000 payment made by the employer can be excluded