under what curcumstances might a court enforce a verbal cotract for sale of land?

a. where it would be unfair to permit the defendant to avoid his or her contractual obligations

b. where the person attempting to enforce the agreement has performed acts that can be explained by the existence of an agreement

c.

where the plaintiff comes to the court with "clean hands"

d.

where enforcement of the agreement will not interfere with the rights of third parties