In Which of the Following Situations Would There Be an Enforceable

Multiple Choice

In which of the following situations would there be an enforceable contract despite the lack of a written contract?

A) Contractor Joe agreed to build a $250,000 home for Sam on Sam's land, to be completed no later than 9 months from the date of signing.
B) Jack leases a storage facility for duration of his 2-year army hitch.
C) Sam agreed to guarantee a loan for his friend Joe.
D) Sam agreed to trade his vacation cottage with Joe in exchange for Joe's yacht.
E) Jack agreed to build a garage for Sam after he finished the remainder of his 2-year army hitch (he has 14 months left) .