Buildwell Construction Company contracted to build a house for William. The specifications called for the use of Karlene Pipe for all plumbing. Buildwell, however, got a better price on Boynton Pipe and substituted the equally good Boynton Pipe for Karlene Pipe. Upon inspection, William discovered the change, and he now refuses to make the final payment. The contract price was for $200,000, and the final payment is $20,000.

1. Highlight the pertinent facts;

2. Identify the issue of law and/or fact posed by the case problem;

3. What should be the decision in the case?

4. The reasoning for such decision.