Please help me study for a test by solving this question and showing work. Thanks!

You are trying to decide which of two offers to accept given the fact that your discount rate is 9 percent. The first offer includes annual gifts of $10,000, $11,000, and $12,000 at the end of each of the next three years, respectively. The other offer is the payment of one lump sum amount today. What is the minimum amount that you will accept today if you are to select the lump sum offer?