Adams, Baker and Caleb are in partnership running a boutique store. Adam and Baker nominate Caleb to advertise the new collection for the upcoming season agreeing a total budget of £5,000 as the marketing expenditure. Caleb feels that as their store sell premium apparels, he places an advertisement with a high quality glossy magazine, thus incurring additional £2,000 payable within 20 days upon first publication. When Adams and Baker know this, they are very angry about the decision of Caleb and repudiate the payment to the publisher. Which of the following best describe whether the publisher can enforce the contract?