Three years ago Dr. and Mrs. Henderson moved from the house they had owned for 20 years, but did not sell it. They decided to travel and bought a mobile home to live in. They now sell the house. How much of their capital gain on the house will be taxable?

A) 15 percent, depending on their tax bracket
B) 28 percent, depending on their tax bracket
C) All of it, if it is over $500,000
D) None of it, if it is less than $500,000

Answer: D) None of it, if it is less than $500,000