Where a person (in this section and Subdivision B called the non-licensee ) and another person (in this section and Subdivision B called the client ), not being an excluded client, enter into an agreement relating to a dealing or proposed dealing in a futures contract by the non-licensee on the client's behalf, being a dealing or proposed dealing involving a contravention by the non-licensee of section 1142, Subdivision B applies, whether or not anyone else is a party to the agreement.