Can you please explain how to answer this question? I don't understand it.

Gamma Corporation distributes land to its sole shareholder, Lisa. The land has a basis

to the corporation of $20,000 and a fair market value of $50,000. There is a $35,000

mortgage on the land which the shareholder agrees to assume. Before this distribution,

Gamma has current E&P of $5,000 and accumulated E&P of $4,000.

A.) How much gain does Gamma Corporation recognize as a result of this distribution?

B.) How much dividend income does Lisa recognize as a result of this distribution?

C.) What is Lisa's basis for the land?

D.) What is Gamma Corporation's E&P after the distribution?