Denton Agreed to Build a Cedar Deck for the Thrashers

True/False

Denton agreed to build a cedar deck for the Thrashers for $7,000.After he began the work,the Thrashers asked him to add cedar flower boxes at one side.Denton replied he would,but it would cost an additional $600.The Thrashers would not be obligated to pay the additional sum because the original agreement already obligated Denton to complete the deck for $7,000.