On July 25, Post Corp. engaged Biggs, a CPA, to audit Post's July 31 financial statements and to issue a report in time for the annual shareholders' meeting to be held on September 5. Notwithstanding Biggs's reasonable efforts, the report was not ready until September 7 because of delays by Post's staff. Post refused to accept or to pay for the report. In the event Biggs sues Post, what is the probable outcome?