Distributions from a Corporation $($for reference, see practice question $381$ on page $63$ and related answer and explanation on page $122)$: A corporation distributed land with a basis of $$50,000$ and a fair market value of $$80,000,$ but was subject to a nonrecourse liability of $$90,000$ to its sole shareholder. What amount represents the corporation's recognized gain?

a$.$ $$80,000$

b$.$ $$30,000$

c$.$ $$50,000$

d$.$ $$40,000$