Gerald received a one$-$third capital and profit $($loss$)$ interest in XYZ Limited Partnership

$($LP$).$ In exchange for this interest, Gerald contributed a building with an FMV of $$30,000.$

His adjusted basis in the building was $$15,000.$ In addition, the building was encumbered

with a $$9,000$ nonrecourse mortgage that XYZ LP assumed at the time the property was

contributed. What is Gerald's outside basis immediately after his contribution?

A$)$ $$6,000$

B$)$ $$9,000$

C$)$ $$21,000$

D$)$ $$24,000$