A homeowner entered into a written K by which a carpenter agreed to build book shelves and an office area in the homeowner's new home within 6 months in exchange for $20k. The carpenter reported to the homeowner that the work was completed and demanded their $20k. The homeowner inspected the shelving and discovered that the carpenter had installed 3 shelves instead of the 4 called for in the specifications accompanying and incorporated by reference into the K. The homeowner estimated that it would cost $2k to installed the fourth shelf and mailed the carpenter a check for $18k on which she had written "Payment in Full". The carpenter cashed the check then filed an action against the homeowner for the additional $2k.
For whom should the court award judgement?