If a married couple who file jointly have a $10,000 net long-term capital gain, what are the maximum tax rates applicable to that gain if their total taxable income would otherwise be taxed at 15 percent, 25 percent, 33 percent, or 39-6 percent and the gain is from
a. An investment bond?
b. A stamp collection?
c. An unrecaptured Section 1250 gain?