Defensive public relations refers to the relationship activities that are carried out when the organization has difficulty in coordinating with the external environment, and when the relationship with the public appears to be fraught, adjust the organizational structure, products, policies, or operating methods in a timely manner to adapt to environmental changes and public requirements. Which of the following are defensive public relations? ['The senior members of a company have visited every relocated family many times, conducted sincere and meticulous communication, and successfully completed the relocation.', 'A company apologized in time through the media for the adverse effects caused by the inappropriate speech of its vice president, and obtained public understanding.', "A listed company regularly releases the company's production and financial information through relevant media, and employees are very satisfied with this transparent approach.", 'A cake manufacturer recalled more than 100 catties of cake produced in 2 batches in time after receiving a complaint call from an individual customer.']