Susan Contributed Land with a Basis of $6,000 and an FMV

Susan contributed land with a basis of $6,000 and an FMV of $10,000 to the SH Partnership two years ago to acquire her partnership interest. This year, the land is distributed to Harry when its FMV is $11,000. No other distributions have been made since Susan became a partner. When the land is distributed, the partnership's basis in the land immediately before distribution is increased by

A) $0.
B) $1,000.
C) $4,000.
D) $5,000.