During the current year, Hom donates a sculpture that cost $1,000 to a museum for exhibition. The sculpture's fair market value was $1,700 on the date of the donation, and Hom's adjusted gross income is $40,000.

a. If Hom had held the sculpture for 4 months and the $700 ($1,700 - $1,000) of appreciation would have been a short-term capital gain, calculate the amount of his itemized deduction for the contribution.
b. If Hom had held the sculpture for 2 years and the $700 gain would have been a long-term capital gain, calculate the amount of his itemized deduction for the contribution.