On March 1, Green and Brown orally agreed that Brown would erect a boathouse on Green's lot and would dig a channel from the boathouse across Clark's lot to a lake. Clark had already orally agreed with Green to permit the digging of the channel across Clark's lot. Brown agreed to begin work on the boathouse on March 15, and to complete all the work before June 1. The total price of $10,000 was to be paid by Green in three installments: $2,500 on March 15, $2,500 when the boathouse was completed, and $5,000 when Brown finished the digging of the channel."Assume that Green tendered the $2,500 on March 15, and that Brown refused to accept it or to perform. In an action by Green against Brown for breach of contract, which of the following can Brown successfully use as a defense? I. The Clark-Green agreement permitting the digging of the channel across Clark's lot was not in writing. II. The Green-Brown agreement was not in writing. 
I only II only Both I and II Neither I nor II