Yong Contributes a Machine Having an Adjusted Basis of $20,000

Yong contributes a machine having an adjusted basis of $20,000 and an FMV of $25,000 for a 10% partnership interest. Yong had taken $10,000 of depreciation prior to the contribution. The partnership has no liabilities. As a result of the contribution, Yong must recognize

A) $10,000 ordinary income.
B) a $5,000 Sec. 1245 gain.
C) a $5,000 capital gain.
D) no gain or loss.