7.Weldon Newfield was having a custom home built. He had a list of certain materials the contractor was to use in building the $270,000 home. Newfield was in Europe and the contractor could not find "Reading Copper Pipe" - one of the required materials. Since Newfield could not be reached and the contractor was under a time schedule, the decision was made to use another brand of copper pipe. When Newfield returned and learned of the problem, he refused to pay any remaining amounts due on the contract ($235,000). Can Newfield do that?