Mario was asked by his secretary$,$ Melissa, to sign a form requesting additional supplies needed on the factory floor. He was not careless when he examined the form, but Melissa had cleverly arranged the signature line that instead of signing a request for supplies he signed a check payable to her. What plea, if any, could Mario use as a defense to prevent having to honour this check?

Mistake

Bad Faith

Non Est Factum

Rectification