Jesse Smith had several times been hospitalized for alcoholism. While he was at home, in bed, in an alcoholic stupor, his son Stan asked him to co-sign on a promissory note so Stan could finance a remodeling of his restaurant. Stan failed to make timely payments; Bank-the creditor-said it would foreclose on the restaurant mortgage unless at least interest payments were made. Stan again approached his father who was now sober and the older man wrote a check for the interest owing. Stan subsequently declared bankruptcy and Bank turned to Jesse for payment. Jesse's contract is

A)enforceable

B)void

C)unenforceable

D)executory

E)voidable