Mr. Raven acquired 50% interest in a partnership by contributing a building that had a FMV of $12,000 and an adjusted basis of $10,000. The building was subject to a liability of $6,000, which the partnership assumed for legitimate business purposes. The partnership has no other liabilities. What is Mr. Raven's adjusted basis in the partnership? a. 12,000 b. 10,000 c. 7,000 d. 4,000