15. Scarlet Witch and Dr. Strange decide to form their new magic business as an LLC. Each will receive an equal profits (loss) interest by contributing cash, property, or both. In addition to the members' contributions, their LLC will obtain a $60,000 nonrecourse loan from the Sanctum Bank at the time it is formed. Dr. Strange contributes cash of $10,000 and a building he bought as a storefront for the magical equipment. The building has an FMV of $55,000 and an adjusted basis of $40,000 and is secured by a $45,000 nonrecourse mortgage that the LLC will assume. What is Dr. Strange's outside tax basis in his LLC interest?

A. $47,500.

B. $55,000.

C. $60,000.

D. $52,500.

E. $20,000.