Jump Corporation, a cash-basis, calendar-year corporation that operated as a C corporation for a number of years, elected to be taxed as an S corporation on January 1 of the current year. The election is effective for the current tax year. On January 1 of the current year, Jump had land with a basis of $100,000 and a fair market value of $250,000. On June 15 of the current year, Jump sold the land for $275,000. If Jump had been a C corporation for the current taxable year, its taxable income would have been $200,000. Jump had $50,000 of Subchapter C E&P on December 31 of the current year. 

What is Jump's built-in gains tax?