Restitution is available when: a. Elizabeth agrees to sell an acre of land to Vanessa, and after Vanessa makes a partial payment Elizabeth wrongfully refuses to
transfer title.
b. Lawrence makes an oral contract to provide physical training for Lee for fourteen months and Lee discharges Lawrence after six months.
c. Gilbert uses undue influence to induce Cynthia to sell him an antique chair for $10.
d. Restitution is available in all of the above cases.